Fixed online status stuck when switching between accounts one more time.

The first attempt to fix this bug is here: 8171ed6c12.
It caused crash so it was reverted here: 2ef47222f4.

Telegram/SourceFiles/main/main_session.cpp

@@ -157,6 +157,7 @@ Session::Session(
 
 // Can be called only right before ~Session.
 void Session::finishLogout() {
+	updates().updateOnline();
 	unlockTerms();
 	data().clear();
 	data().clearLocalStorage();