K 10
svn:author
V 6
kevans
K 8
svn:date
V 27
2019-11-29T14:46:13.423491Z
K 7
svn:log
V 216
tty_rel_gone: add locking assertion

We already assert the lock is held later during tty_rel_free(), but it is
arguably good form to clarify locking expectations here as well at the
top-level that other drivers use.

END