Fix the build for WinRT/ARM

Task-number: QTBUG-44491
Change-Id: Iec007ff83414d333d10609882b11ab4fd485345a
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>

src/websockets/qwebsocketframe.cpp

@@ -307,7 +307,7 @@ bool QWebSocketFrame::isValid() const
 // The arm compiler of Visual Studio 2013 Update 3 crashes when
 // trying to optimize QWebSocketFrame::readFrame. Hence turn
 // those off for this snippet
-#if defined(Q_OS_WINPHONE) && defined(__ARM__)
+#if (defined(Q_OS_WINPHONE) || defined(Q_OS_WINRT)) && defined(__ARM__)
 #  pragma optimize("", off)
 #endif
 
@@ -519,7 +519,7 @@ QWebSocketFrame QWebSocketFrame::readFrame(QIODevice *pIoDevice)
     return frame;
 }
 
-#if defined(Q_OS_WINPHONE) && defined(__ARM__)
+#if (defined(Q_OS_WINPHONE) || defined(Q_OS_WINRT)) && defined(__ARM__)
 #  pragma optimize("", on)
 #endif