From cb410646fdaa9c6e3285e1d015ad0095ba9b012b Mon Sep 17 00:00:00 2001
From: araujo <araujo@FreeBSD.org>
Date: Mon, 18 Apr 2016 07:14:01 +0000
Subject: [PATCH] User NULL instead of 0 for pointers.

getservent(3) returns NULL on EOF or error.

MFC after:	2 weeks.
---
 usr.bin/talk/get_addrs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/usr.bin/talk/get_addrs.c b/usr.bin/talk/get_addrs.c
index 526e26fd5761..b2af6855ddbd 100644
--- a/usr.bin/talk/get_addrs.c
+++ b/usr.bin/talk/get_addrs.c
@@ -59,7 +59,7 @@ get_addrs(const char *my_machine_name __unused, const char *his_machine_name)
 		err(1, "failed to find my interface address");
 	/* find the server's port */
 	sp = getservbyname("ntalk", "udp");
-	if (sp == 0)
+	if (sp == NULL)
 		errx(1, "ntalk/udp: service is not registered");
 	daemon_port = sp->s_port;
 }