Fix restart before exec on macOS.

Telegram/SourceFiles/core/application.cpp

@@ -1079,7 +1079,7 @@ void Application::QuitAttempt() {
 	if (!IsAppLaunched()
 		|| Sandbox::Instance().isSavingSession()
 		|| App().readyToQuit()) {
-		QApplication::quit();
+		Sandbox::QuitWhenStarted();
 	}
 }
 
@@ -1115,7 +1115,7 @@ void Application::quitPreventFinished() {
 
 void Application::quitDelayed() {
 	if (!_private->quitTimer.isActive()) {
-		_private->quitTimer.setCallback([] { QApplication::quit(); });
+		_private->quitTimer.setCallback([] { Sandbox::QuitWhenStarted(); });
 		_private->quitTimer.callOnce(kQuitPreventTimeoutMs);
 	}
 }

Telegram/SourceFiles/core/sandbox.cpp

@@ -78,6 +78,8 @@ QString _escapeFrom7bit(const QString &str) {
 
 } // namespace
 
+bool Sandbox::QuitOnStartRequested = false;
+
 Sandbox::Sandbox(
 	not_null<Core::Launcher*> launcher,
 	int &argc,
@@ -155,9 +157,22 @@ int Sandbox::start() {
 		_localSocket.connectToServer(_localServerName);
 	}
 
+	if (QuitOnStartRequested) {
+		closeApplication();
+		return 0;
+	}
+	_started = true;
 	return exec();
 }
 
+void Sandbox::QuitWhenStarted() {
+	if (!QApplication::instance() || !Instance()._started) {
+		QuitOnStartRequested = true;
+	} else {
+		quit();
+	}
+}
+
 void Sandbox::launchApplication() {
 	InvokeQueued(this, [=] {
 		if (App::quitting()) {

Telegram/SourceFiles/core/sandbox.h

@@ -60,6 +60,7 @@ public:
 
 		return *static_cast<Sandbox*>(QCoreApplication::instance());
 	}
+	static void QuitWhenStarted();
 
 	~Sandbox();
 
@@ -119,6 +120,8 @@ private:
 	QLocalSocket _localSocket;
 	LocalClients _localClients;
 	bool _secondInstance = false;
+	bool _started = false;
+	static bool QuitOnStartRequested;
 
 	std::unique_ptr<UpdateChecker> _updateChecker;