Change: no longer use UDP when entering the lobby of a server

The lobby of a server requested some parts via UDP and some via
TCP. This is strictly seen fine, but for future extensions it
is a lot easier if just one protocol is used.

src/network/network_gui.h

@@ -15,6 +15,7 @@
 #include "../economy_type.h"
 #include "../window_type.h"
 #include "network_type.h"
+#include "network_gamelist.h"
 
 void ShowNetworkNeedPassword(NetworkPasswordType npt);
 void ShowNetworkChatQueryWindow(DestType type, int dest);
@@ -37,5 +38,6 @@ struct NetworkCompanyInfo : NetworkCompanyStats {
 };
 
 NetworkCompanyInfo *GetLobbyCompanyInfo(CompanyID company);
+NetworkGameList *GetLobbyGameInfo();
 
 #endif /* NETWORK_GUI_H */