NPE fix

L2_GameServer/java/com/l2jserver/gameserver/model/itemcontainer/ItemContainer.java

@@ -163,12 +163,18 @@ public abstract class ItemContainer
 		long count = 0;
 		
 		for (L2ItemInstance item : _items)
-			if (item.getItemId() == itemId && ((item.getEnchantLevel() == enchantLevel) || (enchantLevel < 0)))
+		{
+			if (item == null)
+				continue;
+
+			if (item.getItemId() == itemId
+					&& ((item.getEnchantLevel() == enchantLevel) || (enchantLevel < 0)))
 				//if (item.isAvailable((L2PcInstance)getOwner(), true) || item.getItem().getType2() == 3)//available or quest item
 				if (item.isStackable())
 					count = item.getCount();
 				else
 					count++;
+		}
 		
 		return count;
 	}