Windows/Quick2: Autotest tst_examples frequently crashes in CI

http://testresults.qt-project.org/qtmetrics/autoteststatus/index.html of 12.11.2013 and previous shows that the test frequently crashes on Windows (various builds, MSVC2010/32 as well as MSVC2012/64). The last successful example is apparently qml-i18n.qml

So far, this neither locally reproduceable nor by logging into the CI machines, so the assumption is that something fails under load.
I am wondering about the below code:

  QScopedPointer<QObject> object(component.beginCreate(engine.rootContext()));
    QQuickItem *root = qobject_cast<QQuickItem *>(object.data());
    if (!root)
        component.completeCreate();
    QVERIFY(root);

If root is 0, is there any point in still calling component.completeCreate() ? - Why is it not simply calling create()?