Windows: qdeclarativemoduleplugin autotest of qtquick1 fails

FAIL!  : tst_qdeclarativemoduleplugin::importPluginWithQmlFile() 'path.at(0).isUpper() && path.at(1) == QLatin1Char(':')' returned FALSE. ()
.\tst_qdeclarativemoduleplugin.cpp(192) : failure location

    QString path = importsDirectory();

    // QTBUG-16885: adding an import path with a lower-case "c:" causes assert failure
    // (this only happens if the plugin includes pure QML files)
    #ifdef Q_OS_WIN
        QVERIFY(path.at(0).isUpper() && path.at(1) == QLatin1Char(':'));
        path = path.at(0).toLower() + path.mid(1);
    #endif