ReFix Coverity Scan CID 340273 (Using uninitialized value slen when calling recvfrom.)

openair2/UTIL/ASYNC_IF/socket_link.c

@@ -404,7 +404,7 @@ static int socket_udp_receive(int socket_fd, void *buf, int size)
   LOG_D(PROTO_AGENT,"UDP RECEIVE\n");
 
   struct sockaddr_in client;
-  socklen_t slen = 0;
+  socklen_t slen = sizeof(client);
   int   l;
 
   l = recvfrom(socket_fd, buf, size, 0, (struct sockaddr *) &client, &slen);