iter_next
hentry_t *tmp = iter_next(itr);
tmp = iter_next(itr);
extern hentry_t *iter_next(hiter_t *);
ntry = iter_next(itr);
ntry = iter_next(itr);
hentry_t *tmp = iter_next(itr);
tmp = iter_next(itr);
iface->iter_next = ast_iter_next;