From 94db04e182dc78df6fa75f8e9c97b81c59c15b4b Mon Sep 17 00:00:00 2001
From: David Phillips <dbphillipsnz@gmail.com>
Date: Tue, 26 Apr 2016 14:33:45 +1200
Subject: isspace(3) is correct to use for PGM

---
 pgm-interlace.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/pgm-interlace.c b/pgm-interlace.c
index 0060723..9c8e417 100644
--- a/pgm-interlace.c
+++ b/pgm-interlace.c
@@ -71,18 +71,13 @@ int check_sanity(long width, long height, long white, unsigned int clust_total)
 	return 0;
 }
 
-int is_pgm_whitespace(char c)
-{
-	return strchr(" \t\n\r", c) != NULL;
-}
-
 void read_whitespace(FILE *fd)
 {
 	char c = '\0';
 	do
 	{
 		c = fgetc(fd);
-	} while (is_pgm_whitespace(c));
+	} while (isspace(c));
 
 	ungetc(c, fd);
 }
-- 
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