fix npe when new pet target is null

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>me.youhavetrouble</groupId>
     <artifactId>PreventStabby</artifactId>
-    <version>1.5</version>
+    <version>1.5.1</version>
     <packaging>jar</packaging>
 
     <name>PreventStabby</name>

src/main/java/me/youhavetrouble/preventstabby/listeners/pets/PetTargettingPlayerListener.java

@@ -21,7 +21,7 @@ public class PetTargettingPlayerListener implements Listener {
         if (!(event.getEntity() instanceof Tameable)) return;
         Tameable entity = (Tameable) event.getEntity();
         if (!(entity.getOwner() instanceof Player)) return;
-        if (!(entity.getTarget() instanceof Player)) return;
+        if (!(event.getTarget() instanceof Player)) return;
 
         UUID damager = entity.getOwner().getUniqueId();
         UUID victim = event.getTarget().getUniqueId();