Function slist_pop_head_node

src/include/lib/ilist.h:614–624

* Remove and return the first node from a list (there must be one). */

 * Remove and return the first node from a list (there must be one).
 */
static inline slist_node *
slist_pop_head_node(slist_head *head)
{
	slist_node *node;

	Assert(!slist_is_empty(head));
	node = head->head.next;
	head->head.next = node->next;
	slist_check(head);
	return node;
}

/*
 * Check whether 'node' has a following node.