Unqualified lookup in component root scope causes memory leak

import QtQml 2.0

QtObject {
    property int a: 6
    property QtObject obj1: QtObject {
        Component.onCompleted: console.log(a)
    }
}

#include <QCoreApplication>
#include <QQmlEngine>
#include <QQmlComponent>

int main(int argc, char *argv[])
{
    QCoreApplication app(argc, argv);
    QQmlEngine engine;

    QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/main.qml")));
    QObject *object = component.create();
    delete object;

    return 0;
}