From bb580846dc1dca9bc934507f3a2e0cbef317e092 Mon Sep 17 00:00:00 2001
From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
Date: Sat, 23 Aug 2008 12:27:18 +0000
Subject: [PATCH] Add an explicit comment why we NULLify the two variables.

Reviewed by:	rwatson
MFC after:	3 days
---
 sys/netinet/tcp_syncache.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sys/netinet/tcp_syncache.c b/sys/netinet/tcp_syncache.c
index df2a682cda81..99f12c2640ff 100644
--- a/sys/netinet/tcp_syncache.c
+++ b/sys/netinet/tcp_syncache.c
@@ -1034,6 +1034,7 @@ _syncache_add(struct in_conninfo *inc, struct tcpopt *to, struct tcphdr *th,
 	sb_hiwat = so->so_rcv.sb_hiwat;
 	noopt = (tp->t_flags & TF_NOOPT);
 
+	/* By the time we drop the lock these should no longer be used. */
 	so = NULL;
 	tp = NULL;