memory leak in qDebug()

DWORD WINAPI myThreadRoutine(LPVOID)
{
    qDebug() << "Some debug information.\n";
    return 0;
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QWidget w;
    w.show();

    HANDLE hThread = CreateThread(0, 0, &myThreadRoutine, 0, 0, 0);
    WaitForSingleObject(hThread, INFINITE);
    CloseHandle(hThread);

    int ret = a.exec();

    // get the current state of the flag
    int nCrtDbgFlag = _CrtSetDbgFlag(_CRTDBG_REPORT_FLAG);
    // set memory leak check flag
    nCrtDbgFlag |= _CRTDBG_LEAK_CHECK_DF;
    // set the new debug flag
    _CrtSetDbgFlag(nCrtDbgFlag);

    return ret;
}