Couldn't this just be:

    m_url = URL(URL(), cleanUrl);

    if (getenv(GST_USE_DLNA_PROTOCOL_ENV_VAR))
        cleanUrl.insert("dlna+", 0);

    g_object_set(m_playBin.get(), "uri", cleanUrl.utf8().data(), NULL);

    INFO_MEDIA_MESSAGE("Load %s", cleanUrl.utf8().data());

That way we only need to add two lines of code.

Also, `m_url` is used frequently. Do we want to change it too?