Core/PacketIO: Skip sending empty SMSG_UPDATE_OBJECT for transports on map changes

src/server/game/Maps/Map.cpp

@@ -1725,6 +1725,9 @@ void Map::SendInitTransports(Player* player)
         }
     }
 
+    if (!transData.HasData())
+        return;
+
     WorldPacket packet;
     transData.BuildPacket(&packet);
     player->SendDirectMessage(&packet);
@@ -1743,6 +1746,9 @@ void Map::SendRemoveTransports(Player* player)
         }
     }
 
+    if (!transData.HasData())
+        return;
+
     WorldPacket packet;
     transData.BuildPacket(&packet);
     player->SendDirectMessage(&packet);
@@ -1773,6 +1779,9 @@ void Map::SendUpdateTransportVisibility(Player* player)
         }
     }
 
+    if (!transData.HasData())
+        return;
+
     WorldPacket packet;
     transData.BuildPacket(&packet);
     player->SendDirectMessage(&packet);