- Fixed a null pointer when a mob needs to unlock a target while it's idle.

git-svn-id: https://svn.code.sf.net/p/rathena/svn/trunk@10253 54d463be-8e91-2dee-dedb-b68131a5f0ec

src/map/mob.c

@@ -1025,11 +1025,13 @@ int mob_unlocktarget(struct mob_data *md,int tick)
 		if (battle_config.mob_ai&0x8)
 			mob_stop_walking(md,1); //Inmediately stop chasing.
 		md->state.skillstate = MSS_IDLE;
-		md->target_id=0;
-		md->ud.target = 0;
 		md->next_walktime=tick+rand()%3000+3000;
 		break;
 	}
+	if (md->target_id) {
+		md->target_id=0;
+		md->ud.target = 0;
+	}
 	return 0;
 }
 /*==========================================