Update to skill_used logic

src/engine/objects/AbstractCharacter.java

@@ -956,25 +956,23 @@ public abstract class AbstractCharacter extends AbstractWorldObject {
         if (armor.template.item_skill_used.isEmpty())
             return ib.item_defense_rating;
 
-        if(armor.template.item_skill_used.length() < 1){
-            return ib.item_defense_rating;
-        }
-
         CharacterSkill armorSkill = playerCharacter.skills.get(armor.template.item_skill_used);
-        if (armorSkill == null) {
+
+        if (playerCharacter.getObjectType().equals(GameObjectType.PlayerCharacter) && armorSkill == null) {
             Logger.error("Player " + playerCharacter.getObjectUUID()
                     + " has armor equipped without the nescessary skill to equip it");
             return ib.item_defense_rating;
         }
 
         float def = ib.item_defense_rating;
+
         //apply item defense bonuses
+
         if (armor != null) {
             def += armor.getBonus(ModType.DR, SourceType.NONE);
             def *= (1 + armor.getBonusPercent(ModType.DR, SourceType.NONE));
         }
 
-
         return (def * (1 + ((int) armorSkill.getModifiedAmount() / 50f)));
     }