message: fix invalid retval
diff: @@ -555,7 +555,7 @@ static int swoole_socket_connect(socket_coro *sock, char *host, size_t l_host, i
  if (!inet_pton(AF_INET6, host, &addr.sin6_addr))
  {
  - return -1;
  + return -2;
  }
  else
  {
  