extmod/network_ninaw10: Fix select flags handling in socket poll.

The flags returned from `select()` were misinterpreted to mean an error had
occurred for the socket, when it's actually just an exceptional condition
for the socket, such as OOB data.

Signed-off-by: iabdalkader <i.abdalkader@gmail.com>

extmod/network_ninaw10.c

@@ -92,13 +92,8 @@ STATIC void network_ninaw10_poll_sockets(mp_sched_node_t *node) {
  // remove from poll list on error.
  socket->callback = MP_OBJ_NULL;
  mp_obj_list_remove(MP_STATE_PORT(mp_wifi_sockpoll_list), socket);
- } else if (flags) {
+ } else if (flags & SOCKET_POLL_RD) {
  mp_call_function_1(socket->callback, MP_OBJ_FROM_PTR(socket));
- if (flags & SOCKET_POLL_ERR) {
- // remove from poll list on error.
- socket->callback = MP_OBJ_NULL;
- mp_obj_list_remove(MP_STATE_PORT(mp_wifi_sockpoll_list), socket);
- }
  }
  }
 }
@@ -451,7 +446,7 @@ STATIC int network_ninaw10_socket_poll(mod_network_socket_obj_t *socket, uint32_
  }
  mp_uint_t start = mp_hal_ticks_ms();
  for (; !(flags & rwf); mp_hal_delay_ms(5)) {
- if (nina_socket_poll(socket->fileno, &flags) < 0 || (flags & SOCKET_POLL_ERR)) {
+ if (nina_socket_poll(socket->fileno, &flags) < 0) {
  nina_socket_errno(_errno);
  debug_printf("socket_poll(%d) -> errno %d flags %d\n", socket->fileno, *_errno, flags);
  return -1;