/* Destroys |new| with |rtbst_destroy (new, destroy)|,
   first initializing right links in |new| that have
   not yet been initialized at time of call. */
static void
copy_error_recovery (struct rtbst_table *new, rtbst_item_func *destroy)
{
  struct rtbst_node *p = new->rtbst_root;
  if (p != NULL)
    {
      while (p->rtbst_rtag == RTBST_CHILD)
        p = p->rtbst_link[1];
      p->rtbst_link[1] = NULL;
    }
  rtbst_destroy (new, destroy);
}