After hooking lwip_setsockopt_impl or lwip_getsockopt_impl by using LWIP_HOOK_SOCKETS_SETSOCKOPT or LWIP_HOOK_SOCKETS_GETSOCKOPT, done_socket(sock) is not called so leak sock.


sockets.c : http://git.savannah.gnu.org/cgit/lwip.git/tree/src/api/sockets.c#n2937

> static int
> lwip_getsockopt_impl(int s, int level, int optname, void *optval, socklen_t *optlen)
> {
>   int err = 0;
>   struct lwip_sock *sock = tryget_socket(s);
>   if (!sock) {
>     return EBADF;
>   }
>
> #ifdef LWIP_HOOK_SOCKETS_GETSOCKOPT
>   if (LWIP_HOOK_SOCKETS_GETSOCKOPT(s, sock, level, optname, optval, optlen, &err)) {
>     !!CALL done_socket(sock) here!!
>     return err;
>   }
> #endif

After hooked, should call done_socket(sock) before return.

Thank you.