From 45973d9d158dfe53cf0299b6e8f21545186c6c95 Mon Sep 17 00:00:00 2001
From: araujo <araujo@FreeBSD.org>
Date: Mon, 18 Apr 2016 07:09:34 +0000
Subject: Use NULL instead of 0 for pointers.

fopen(3) will return NULL in case it cannot open the STREAM.

MFC after:	2 weeks.
---
 usr.bin/m4/gnum4.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'usr.bin')

diff --git a/usr.bin/m4/gnum4.c b/usr.bin/m4/gnum4.c
index dcccf3b..61f96d4 100644
--- a/usr.bin/m4/gnum4.c
+++ b/usr.bin/m4/gnum4.c
@@ -129,7 +129,7 @@ dopath(struct input_file *i, const char *filename)
 
 	for (pe = first; pe; pe = pe->next) {
 		snprintf(path, sizeof(path), "%s/%s", pe->name, filename);
-		if ((f = fopen(path, "r")) != 0) {
+		if ((f = fopen(path, "r")) != NULL) {
 			set_input(i, f, path);
 			return i;
 		}
-- 
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