K 10
svn:author
V 2
kp
K 8
svn:date
V 27
2021-02-28T16:04:50.575927Z
K 7
svn:log
V 410
pf: Fix build if INVARIANTS is not set

r340061 included a number of assertions pf_frent_remove(), but these assertions
were the only use of the 'prev' variable. As a result builds without
INVARIANTS had an unused variable, and failed.

Reported by:	vangyzen@

(cherry picked from commit 58ef854f8b05508f41aff3bdaf1564c8dd4c1d4f)

Git Hash:   555726fda685ab5be9ccdbfcb73b9336dc2d75af
Git Author: kp@FreeBSD.org
END