remove pet properly when no owner found

src/engine/mobileAI/BehaviourFiles/PlayerPet.java

@@ -17,7 +17,8 @@ import java.util.Map;
 public class PlayerPet {
 
     public static void process(Mob pet){
-        if(pet.getOwner() == null){
+        if(pet.getOwner() == null && !pet.isNecroPet()){
+            pet.killCharacter("no owner");
             return;
         }