qt: Poll ShutdownTimer after init is done

Github-Pull: #12377
Rebased-From: 2222bf02c94a10387c318b295982719eb07b8d06
Tree-SHA512: 575c10d9f043e2843616b989daaecfb357482445bc44b9f3af2fe0d891bb36b5ccb572f326703ea85291d56b9f6e8f4828496099b05889daea2277ad38aa0d0e

src/qt/bitcoin.cpp

@@ -388,7 +388,6 @@ void BitcoinApplication::createWindow(const NetworkStyle *networkStyle)
 
     pollShutdownTimer = new QTimer(window);
     connect(pollShutdownTimer, SIGNAL(timeout()), window, SLOT(detectShutdown()));
-    pollShutdownTimer->start(200);
 }
 
 void BitcoinApplication::createSplashScreen(const NetworkStyle *networkStyle)
@@ -515,6 +514,7 @@ void BitcoinApplication::initializeResult(bool success)
                          window, SLOT(message(QString,QString,unsigned int)));
         QTimer::singleShot(100, paymentServer, SLOT(uiReady()));
 #endif
+        pollShutdownTimer->start(200);
     } else {
         quit(); // Exit main loop
     }