switch to CIRCLEQ_FOREACH_REVERSE in tcpdropoldhalfopen() and avoid dropping youngest TCB; ok henning deraadt
switch to CIRCLEQ_FOREACH_REVERSE in tcpdropoldhalfopen() and
avoid dropping youngest TCB; ok henning deraadt

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars