null check

src/engine/gameManager/NPCManager.java

@@ -467,9 +467,11 @@ public enum NPCManager {
         if(NPCManager._runeSetMap.containsKey(npc.runeSetID)) {
             for (int runeID : _runeSetMap.get(npc.runeSetID)) {
                 RuneBase rb = RuneBase.getRuneBase(runeID);
+                if(rb != null) {
                     CharacterRune toApply = new CharacterRune(rb, npc.getObjectUUID());
                     npc.runes.add(toApply);
                 }
             }
         }
     }
+}