rl_e_unmark
static struct rl_q_entry *rl_e_unmark(const struct rl_q_entry *e);
next = rl_e_unmark(next);
next = rl_e_unmark(next);
next = rl_e_unmark(next);
next = rl_e_unmark(next);
x = rl_e_is_marked(e) ? rl_e_unmark(e) : e;