Patch to stop HTTPMUSocket

[Francesco Furfari]

Hi Satoshi,
here a patch to stop properly the HTTPMUSocket thread.

public boolean close()
{
if (ssdpMultiSock == null)
            return true;
           
        try {
            ssdpMultiSock.leaveGroup(ssdpMultiGroup, ssdpMultiIf);
            ssdpMultiSock.close();
            ssdpMultiSock = null;
        }
        catch (Exception e) {
            //Debug.warning(e);
            return false;
        }
       
        return true;
    }

[Francesco Furfari]

I pressed the post button inadvertely :-)

I added a line to close explicitly ssdpMultiSock otherwise it can stay blocked in a receive operation.

ciao,
francesco