fixing a problem in the server lobby room protocol (that bug had been introduced some revisions ago

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/branches/hilnius@13422 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/network/protocols/server_lobby_room_protocol.cpp

@@ -66,7 +66,7 @@ bool ServerLobbyRoomProtocol::notifyEventAsynchronous(Event* event)
         assert(data.size()); // message not empty
         uint8_t message_type;
         message_type = data[0];
-        data->removeFront(1);
+        event->removeFront(1);
         Log::info("ServerLobbyRoomProtocol", "Message received with type %d.", message_type);
         if (message_type == 0x01) // player requesting connection
             connectionRequested(event);