Fix possible crash when using the new "Auto-shutdown" feature

src/GUI.cpp

@@ -286,10 +286,8 @@ GUI::~GUI() {
   delete switchTransferShortcut;
   delete switchRSSShortcut;
   // Delete BTSession objects
+  qDebug("Deleting BTSession");
   delete BTSession;
-  // Deleting remaining top level widgets
-  qDebug("Deleting remaining top level widgets");
-
   // May freeze for a few seconds after the next line
   // because the Bittorrent session proxy will
   // actually be deleted now and destruction

src/bittorrent.cpp

@@ -2049,12 +2049,16 @@ void Bittorrent::addConsoleMessage(QString msg, QString) {
 #if LIBTORRENT_VERSION_MINOR < 15
               saveDHTEntry();
 #endif
+              qDebug("Saving session state");
               saveSessionState();
+              qDebug("Saving fast resume data");
               saveFastResumeData();
+              qDebug("Deleting the session");
               delete s;
+              qDebug("Sending computer shutdown signal");
               misc::shutdownComputer();
-              exiting = true;
+              qDebug("Exiting the application");
-              qApp->exit();
+              exit(0);
             }
           }
         }

src/main.cpp

@@ -308,7 +308,7 @@ int main(int argc, char *argv[]){
 #endif
 
   int ret = app.exec();
-
+  qDebug("Application has exited");
   return ret;
 }