Null checks for AbstractPlayerGroup isLeader method.

L2J_Mobius_1.0_Ertheia/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_2.5_Underground/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_3.0_Helios/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_4.0_GrandCrusade/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_5.0_Salvation/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_5.5_EtinasFate/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_6.0_Fafurion/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_7.0_PreludeOfWar/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_8.0_Homunculus/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_9.0_ReturnOfTheQueenAnt/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_9.2_ReturnOfTheQueenAnt_Ch2/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_CT_2.4_Epilogue/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -82,7 +82,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_CT_2.6_HighFive/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -82,7 +82,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_2.0_Saviors/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_2.1_Zaken/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_2.2_Antharas/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_2.3_SevenSigns/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_2.4_SecretOfEmpire/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_3.0_TheKamael/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Classic_Interlude/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Essence_4.0_DwellingOfSpirits/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Essence_5.0_Sylph/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**

L2J_Mobius_Essence_5.2_FrostLord/java/org/l2jmobius/gameserver/model/AbstractPlayerGroup.java

@@ -83,7 +83,18 @@ public abstract class AbstractPlayerGroup
 	 */
 	public boolean isLeader(PlayerInstance player)
 	{
-		return getLeader().getObjectId() == player.getObjectId();
+		if (player == null)
+		{
+			return false;
+		}
+		
+		final PlayerInstance leader = getLeader();
+		if (leader == null)
+		{
+			return false;
+		}
+		
+		return leader.getObjectId() == player.getObjectId();
 	}
 	
 	/**