[trunk] empty fields in Inventory now return null instead of Material.AIR

git-svn-id: https://svn.java.net/svn/essentials~svn/trunk@1157 e251c2fe-e539-e718-e476-b85c1f46cddb

Essentials/src/com/earth2me/essentials/InventoryWorkaround.java

@@ -19,6 +19,9 @@ public class InventoryWorkaround {
 		ItemStack[] inventory = ci.getContents();
 		for (int i = start; i < inventory.length; i++) {
 			ItemStack cItem = inventory[i];
+			if (cItem == null) {
+				continue;
+			}
 			if (item.getTypeId() == cItem.getTypeId() && (!forceAmount || item.getAmount() == cItem.getAmount()) && (!forceDurability || cItem.getDurability() == item.getDurability())) {
 				return i;
 			}