Corrected lookup for qmlviewer on Windows

Change-Id: I4ebb87bca34aba07ef5fd408cf5481d8cb10ecf6
Reviewed-on: http://codereview.qt.nokia.com/4264Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Kai Koehne <kai.koehne@nokia.com>

src/plugins/qtsupport/baseqtversion.cpp

@@ -543,8 +543,10 @@ QString BaseQtVersion::findQtBinary(BINARIES binary) const
     QStringList possibleCommands;
     switch (binary) {
     case QmlViewer:
-#ifdef Q_OS_MAC
+#if defined(Q_OS_MAC)
         possibleCommands << QLatin1String("QMLViewer");
+#elif defined(Q_OS_WIN)
+        possibleCommands << QLatin1String("qmlviewer.exe");
 #else
         possibleCommands << QLatin1String("qmlviewer");
 #endif