ctype cleanup; ok gilles

diff --git a/usr.sbin/smtpd/util.c b/usr.sbin/smtpd/util.c
index d437e58..c9c9103 100644 (file)
--- a/usr.sbin/smtpd/util.c
+++ b/usr.sbin/smtpd/util.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: util.c,v 1.104 2013/12/26 17:25:32 eric Exp $ */
+/*     $OpenBSD: util.c,v 1.105 2014/01/08 15:30:49 deraadt Exp $      */
 
 /*
  * Copyright (c) 2000,2001 Markus Friedl.  All rights reserved.
@@ -733,8 +733,8 @@ parse_smtp_response(char *line, size_t len, char **msg, int *cont)
                return "line too short";
 
        /* validate reply code */
-       if (line[0] < '2' || line[0] > '5' || !isdigit(line[1]) ||
-           !isdigit(line[2]))
+       if (line[0] < '2' || line[0] > '5' || !isdigit((unsigned char)line[1]) ||
+           !isdigit((unsigned char)line[2]))
                return "reply code out of range";
 
        /* validate reply message */