Fix a mem leak in ObjectMgr::LoadWaypointScripts(), http://pastebin.com/f701c1e11

--HG--
branch : trunk

src/game/ObjectMgr.cpp

@@ -4697,6 +4697,7 @@ void ObjectMgr::LoadWaypointScripts()
         QueryResult *query = WorldDatabase.PQuery("SELECT * FROM waypoint_scripts WHERE id = %u", itr->first);
         if(!query || !query->GetRowCount())
             sLog.outErrorDb("There is no waypoint which links to the waypoint script %u", itr->first);
+        delete query;
     }
 }