Fix compilation for QT_NO_FILEDIALOG

Change-Id: I2112bc8c9fe58cda84f498f9062b4b32b9ef0c24
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>

tools/qmlscene/main.cpp

@@ -291,7 +291,7 @@ static bool checkVersion(const QUrl &url)
 
 static void displayFileDialog(Options *options)
 {
-#ifdef QT_WIDGETS_LIB
+#if defined(QT_WIDGETS_LIB) && !defined(QT_NO_FILEDIALOG)
     QString fileName = QFileDialog::getOpenFileName(0, "Open QML file", QString(), "QML Files (*.qml)");
     if (!fileName.isEmpty()) {
         QFileInfo fi(fileName);