From 042bbfa3b599531199239df3c3e9fc0ae1cf3df4 Mon Sep 17 00:00:00 2001
From: Robert Watson <rwatson@FreeBSD.org>
Date: Fri, 6 Jun 2003 19:32:48 +0000
Subject: [PATCH] When setting fragment queue pointers to NULL, or comparing
 them with NULL, use NULL rather than 0 to improve readability.

---
 sys/netinet/ip_input.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index c0b53de002ee..7f9195aa0eb1 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -753,7 +753,7 @@ ours:
 			    ip->ip_p == fp->ipq_p)
 				goto found;
 
-		fp = 0;
+		fp = NULL;
 
 		/*
 		 * Enforce upper bound on number of fragmented packets
@@ -977,7 +977,7 @@ ip_reass(struct mbuf *m, struct ipqhead *head, struct ipq *fp,
 	/*
 	 * If first fragment to arrive, create a reassembly queue.
 	 */
-	if (fp == 0) {
+	if (fp == NULL) {
 		if ((t = m_get(M_DONTWAIT, MT_FTABLE)) == NULL)
 			goto dropfrag;
 		fp = mtod(t, struct ipq *);
@@ -1177,7 +1177,7 @@ dropfrag:
 	*divert_rule = 0;
 #endif
 	ipstat.ips_fragdropped++;
-	if (fp != 0)
+	if (fp != NULL)
 		fp->ipq_nfrags--;
 	m_freem(m);
 	return (0);