Use a uniform translated timed out string

src/main_loop.cpp

@@ -336,7 +336,7 @@ void MainLoop::run()
             STKHost::get()->requestedShutdown())
         {
             SFXManager::get()->quickSound("anvil");
-            core::stringw msg = _("Connection to server is lost.");
+            core::stringw msg = _("Server connection timed out.");
             if (!STKHost::get()->getErrorMessage().empty())
             {
                 msg = STKHost::get()->getErrorMessage();

src/network/protocols/client_lobby.cpp

@@ -270,6 +270,7 @@ bool ClientLobby::notifyEventAsynchronous(Event* event)
             case LE_VOTE_REVERSE: playerReversedVote(event);             break;
             case LE_VOTE_LAPS: playerLapsVote(event);                    break;
             case LE_SERVER_OWNERSHIP: becomingServerOwner();             break;
+            default:                                                     break;
         }   // switch
 
         return true;