missed something in one of the socket patches. now works as expected

git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@4516 19bc5d8c-e614-43d4-8b26-e1612bc8e597

CommonLibs/Sockets.cpp

@@ -181,6 +181,7 @@ int DatagramSocket::read(char* buffer, unsigned timeout)
 {
 	fd_set fds;
 	FD_ZERO(&fds);
+	FD_SET(mSocketFD,&fds);
 	struct timeval tv;
 	tv.tv_sec = timeout/1000;
 	tv.tv_usec = (timeout%1000)*1000;