alt socket fix.

        for (iter = localPBSList.begin(); iter != localPBSList.end(); iter++)
        {
            PlaybackSock *pbs = (*iter);

            if (sentSet.containsRef(pbs) || pbs->IsDisconnected())
                continue;

            sentSet.append(pbs);

            bool reallysendit = false;

            if (broadcast[1] == "CLEAR_SETTINGS_CACHE")
            {
                if ((ismaster) &&
                    (pbs->isSlaveBackend() || pbs->wantsEvents()))
                    reallysendit = true;
            }
            else if (sendGlobal)
            {
                if (pbs->isSlaveBackend())
                    reallysendit = true;
            }
            else if (pbs->wantsEvents())
            {
                reallysendit = true;
            }

            MythSocket *sock = pbs->getSocket();
            sock->UpRef();

            if (reallysendit)
            {
                sock->Lock();
                sock->writeStringList(broadcast);
                sock->Unlock();
            }

            if (sock->DownRef())
            {
                // was deleted elsewhere, so the iterator's invalid.
                iter = playbackList.begin();
            }
        }