static void async_read_op_destroy(struct async_read_op *op)
{
	bt_gatt_server_unref(op->server);
	queue_destroy(op->db_data, NULL);
	free(op->pdu);
	free(op);
}
static void async_read_op_destroy(struct async_read_op *op)
{
	bt_gatt_server_unref(op->server);
	queue_destroy(op->db_data, NULL);
	free(op->pdu);
	free(op);
}