RequestAlchemyTryMixCube return when items set to null.

L2J_Mobius_10.3_MasterClass/java/org/l2jmobius/gameserver/network/clientpackets/alchemy/RequestAlchemyTryMixCube.java

@@ -75,6 +75,7 @@ public class RequestAlchemyTryMixCube implements ClientPacket
 			else // Player used packet injection tool.
 			{
 				_items = null;
+				return;
 			}
 		}
 	}