pf: avoid NULL deref on purged statesHEADmain

States can be invalidated and still be present in the state table for a
while (until the pf_purge thread cleans them up). These states might not
have keys set, so we must make sure a state is not purged before we try
to access those keys.

MFC after:	1 week
Sponsored by:	Rubicon Communications, LLC ("Netgate")

0 files changed, 0 insertions, 0 deletions