Fix typo causing npcs to be damageable

main/src/main/java/net/citizensnpcs/EventListen.java

@@ -287,6 +287,7 @@ public class EventListen implements Listener {
             }
             return;
         }
+        event.setCancelled(npc.isProtected());
 
         if (event instanceof EntityDamageByEntityEvent) {
             NPCDamageByEntityEvent damageEvent = new NPCDamageByEntityEvent(npc, (EntityDamageByEntityEvent) event);