$NetBSD$

--- lib/libunshield.c.orig	2004-08-24 08:10:27.000000000 +0200
+++ lib/libunshield.c	2005-08-01 15:28:22.000000000 +0200
@@ -27,7 +27,7 @@
 
     for (; *p != '\0'; p++)
     {
-      if ('.' == *p || isdigit(*p))
+      if ('.' == *p || isdigit((unsigned char)*p))
       {
         *p = '\0';
         break;
