Fix stubs, recv_into error

Author: hierophect

ports/esp32s2/common-hal/socketpool/Socket.c

@@ -210,7 +210,7 @@ mp_uint_t common_hal_socketpool_socket_recv_into(socketpool_socket_obj_t* self,
 
     if (received == 0) {
         // socket closed
-        common_hal_socketpool_socket_close(self);
+        mp_raise_OSError(0);
     }
     return received;
 }

shared-bindings/socketpool/Socket.c

@@ -105,7 +105,7 @@ STATIC mp_obj_t socketpool_socket_listen(mp_obj_t self_in, mp_obj_t backlog_in)
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_2(socketpool_socket_listen_obj, socketpool_socket_listen);
 
-//|     def accept(self) -> tuple:
+//|     def accept(self) -> Tuple[Socket, Tuple[str, int]]:
 //|         """Accept a connection on a listening socket of type SOCK_STREAM,
 //|         creating a new socket of type SOCK_STREAM.
 //|         Returns a tuple of (new_socket, remote_address)"""