$NetBSD: patch-af,v 1.2 2005/04/13 16:45:46 rillig Exp $

--- charset/mimeenc.c.orig	2005-04-06 23:14:37.000000000 +0200
+++ charset/mimeenc.c	2005-04-06 23:14:57.000000000 +0200
@@ -197,7 +197,7 @@
 	p = name;
 	q = mimeencs[i].name;
 	while (*p || *q) {
-	    if (tolower(*p) != tolower(*q))
+	    if (tolower((unsigned char)*p) != tolower((unsigned char)*q))
 		break;
 	    p++; q++;
 	}
