Items MUST have matching uuids

paper/src/main/java/com/programmerdan/minecraft/simpleadminhacks/hacks/basic/ArmourBound.java

@@ -127,19 +127,31 @@ public class ArmourBound extends BasicHack {
 		if (second == null || second.getType() == Material.AIR) {
 			return;
 		}
+		if (!first.hasItemMeta()) {
+			return;
+		}
 		if (!second.hasItemMeta()) {
 			return;
 		}
-		PersistentDataContainer container = second.getItemMeta().getPersistentDataContainer();
-		if (!container.has(this.key, PersistentDataType.STRING)) {
+		PersistentDataContainer firstContainer = first.getItemMeta().getPersistentDataContainer();
+		if (!firstContainer.has(this.key, PersistentDataType.STRING)) {
 			return;
 		}
+		UUID firstUUID = UUID.fromString(firstContainer.get(this.key, PersistentDataType.STRING));
+		PersistentDataContainer secondContainer = second.getItemMeta().getPersistentDataContainer();
+		if (!secondContainer.has(this.key, PersistentDataType.STRING)) {
+			return;
+		}
+		UUID secondUUID = UUID.fromString(secondContainer.get(this.key, PersistentDataType.STRING));
 		ItemStack result = event.getResult();
 		if (result == null || result.getType() == Material.AIR) {
 			return;
 		}
-		result.setItemMeta(second.getItemMeta());
-		event.setResult(result);
+		if (firstUUID.equals(secondUUID)) {
+			//We dont want to do anything if these both match, otherwise set the result to null
+			return;
+		}
+		event.setResult(null);
 	}
 
 	private EquipmentSlot getRealSlot(PlayerArmorChangeEvent.SlotType slotType) {