Leaking ptys in GENERIC RELENG_6 from Sep 28 02:59 UTC

I have had time to look some more at the problem of leaking ptys. It
seems as thou ptys becomes unavailable (Input/output error on access)
and eventually you run out of free ptys.

The problem is documented here:
http://people.freebsd.org/~pho/stress/log/ptys.html
-- 
Peter Holm