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

--- cmdgen.c.orig	2005-04-06 23:30:02.000000000 +0200
+++ cmdgen.c	2005-04-06 23:30:15.000000000 +0200
@@ -114,7 +114,7 @@
 void showversion(void)
 {
     char *verstr = dupstr(ver);
-    verstr[0] = tolower(verstr[0]);
+    verstr[0] = tolower((unsigned char)verstr[0]);
     printf("PuTTYgen %s\n", verstr);
     sfree(verstr);
 }