Comment 5 for bug 1350207

Ha. The hanging function call is:

    // TODO: This should be asynchronous, but we are not making sure
    // that a potential call to send_fds is executed _after_ this
    // function has completed (if it would be executed asynchronously.
    // NOTE: we rely on this synchronous behavior as per the comment in
    // mf::SessionMediator::create_surface
    ba::write(*socket, ba::buffer(whole_message.data(), whole_message.size()));