$NetBSD: patch-at,v 1.2 2007/08/03 17:03:31 obache Exp $

--- src/osdep/unix/mtx.c.orig	2007-06-18 20:20:56.000000000 +0000
+++ src/osdep/unix/mtx.c
@@ -37,7 +37,6 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <errno.h>
-extern int errno;		/* just in case */
 #include "mail.h"
 #include "osdep.h"
 #include <pwd.h>