Function tree_destroy

examples/stdlib.c:5534–5544

}

static void tree_destroy(struct malloc_pool_s *pool, const struct node_s *n,
    void (*free_node)(void *))
{
    if (n == NULL)
        return;
    if (free_node != NULL)
        free_node(n->key);
    tree_destroy(pool, TREE_LEFT(n), free_node);
    tree_destroy(pool, TREE_RIGHT(n), free_node);
    pool_free(pool, (void *)n);
}
static void tdestroy(const void *root, void (*free_node)(void *))
{
    struct node_s *n = (struct node_s *)root;