Log failed equipSet lookups.

src/engine/objects/NPC.java

@@ -906,6 +906,9 @@ public class NPC extends AbstractCharacter {
 
         this.charItemManager.load();
 
+        if (equipmentSetID != 0 && LootManager._bootySetMap.get(equipmentSetID) == null)
+            Logger.error("Invalid equipSet: " + equipmentSetID + " contract: " + this.contractUUID + " npc: " + this.getObjectUUID());
+
         this.equip = loadEquipmentSet(this.equipmentSetID);
 
         if (this.equip == null)