Fixed a keeping online status after application quit.

Fixes https://github.com/telegramdesktop/tdesktop/issues/5528.

Telegram/SourceFiles/core/application.cpp

@@ -1047,6 +1047,11 @@ void Application::preventWindowActivation() {
 void Application::QuitAttempt() {
 	auto prevents = false;
 	if (AuthSession::Exists() && !Sandbox::Instance().isSavingSession()) {
+		if (auto mainwidget = App::main()) {
+			if (mainwidget->isQuitPrevent()) {
+				prevents = true;
+			}
+		}
 		if (Auth().api().isQuitPrevent()) {
 			prevents = true;
 		}

Telegram/SourceFiles/mainwidget.cpp

@@ -3777,7 +3777,14 @@ void MainWidget::updateOnline(bool gotOtherOffline) {
 
 		_lastWasOnline = isOnline;
 		_lastSetOnline = ms;
-		_onlineRequest = MTP::send(MTPaccount_UpdateStatus(MTP_bool(!isOnline)));
+		if (!App::quitting()) {
+			_onlineRequest = MTP::send(MTPaccount_UpdateStatus(MTP_bool(!isOnline)));
+		} else {
+			_onlineRequest = MTP::send(
+				MTPaccount_UpdateStatus(MTP_bool(!isOnline)),
+				rpcDone(&MainWidget::updateStatusDone),
+				rpcFail(&MainWidget::updateStatusFail));
+		}
 
 		const auto self = session().user();
 		self->onlineTill = unixtime() + (isOnline ? (Global::OnlineUpdatePeriod() / 1000) : -1);
@@ -3795,6 +3802,27 @@ void MainWidget::updateOnline(bool gotOtherOffline) {
 	_onlineTimer.callOnce(updateIn);
 }
 
+void MainWidget::updateStatusDone(const MTPBool &result) {
+	Core::App().quitPreventFinished();
+}
+
+bool MainWidget::updateStatusFail(const RPCError &error) {
+	if (MTP::isDefaultHandledError(error)) {
+		return false;
+	}
+	Core::App().quitPreventFinished();
+	return true;
+}
+
+bool MainWidget::isQuitPrevent() {
+	if (!_lastWasOnline) {
+		return false;
+	}
+	LOG(("MainWidget prevents quit, sending offline status..."));
+	updateOnline();
+	return true;
+}
+
 void MainWidget::saveDraftToCloud() {
 	_history->saveFieldToHistoryLocalDraft();
 

Telegram/SourceFiles/mainwidget.h

@@ -300,6 +300,8 @@ public:
 	void notify_userIsBotChanged(UserData *bot);
 	void notify_historyMuteUpdated(History *history);
 
+	bool isQuitPrevent();
+
 	~MainWidget();
 
 signals:
@@ -445,6 +447,9 @@ private:
 	void viewsIncrementDone(QVector<MTPint> ids, const MTPVector<MTPint> &result, mtpRequestId req);
 	bool viewsIncrementFail(const RPCError &error, mtpRequestId req);
 
+	void updateStatusDone(const MTPBool &result);
+	bool updateStatusFail(const RPCError &error);
+
 	void refreshResizeAreas();
 	template <typename MoveCallback, typename FinishCallback>
 	void createResizeArea(