kern/164400: [ipsec] immediate crash after the start of ipsec processing

[bz at FreeBSD.org]

Synopsis: [ipsec] immediate crash after the start of ipsec processing

Responsible-Changed-From-To: freebsd-net->bz
Responsible-Changed-By: bz
Responsible-Changed-When: Thu May 24 23:40:20 UTC 2012
Responsible-Changed-Why: 
Whoops, it wasn't assigned to me yet.  I broke it, I'll fix it
though it has taken me a while to get to this.

http://www.freebsd.org/cgi/query-pr.cgi?pr=164400