libavformat/udp.c:524: error: Uninitialized Value
  The value read from localaddr[_] was never initialized.

libavformat/udp.c:524:9: 
522.         s->local_port = port;
523. 
524.     if (localaddr[0])
             ^
525.         udp_fd = udp_socket_create(s, &my_addr, &len, localaddr);
526.     else
