From b4b3d271de2da748fc1eb58aaa7b1164eee51206 Mon Sep 17 00:00:00 2001
From: Marcelo Araujo <araujo@FreeBSD.org>
Date: Wed, 20 Apr 2016 01:28:31 +0000
Subject: [PATCH] Use NULL instead of 0 for pointers. Small cosmetic change.

MFC after:	2 weeks.
---
 usr.bin/tftp/main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/usr.bin/tftp/main.c b/usr.bin/tftp/main.c
index 7d97a75d7f30..2eaff80be86e 100644
--- a/usr.bin/tftp/main.c
+++ b/usr.bin/tftp/main.c
@@ -749,11 +749,11 @@ command(void)
 		if (margc == 0)
 			continue;
 		c = getcmd(margv[0]);
-		if (c == (struct cmd *)-1) {
+		if (c == (struct cmd *) - 1) {
 			printf("?Ambiguous command\n");
 			continue;
 		}
-		if (c == 0) {
+		if (c == NULL) {
 			printf("?Invalid command\n");
 			continue;
 		}