$NetBSD: patch-ab,v 1.3 2001/06/11 20:58:33 zuntum Exp $

--- ../include/os.h.orig	Tue Mar 27 03:39:01 2001
+++ ../include/os.h
@@ -58,7 +58,7 @@
 # define _PATH_DEVNULL		"/dev/null"
 #endif
 
-#if !defined(_AIX) && !defined(__FreeBSD__)
+#if !defined(_AIX) && !defined(__FreeBSD__) && !defined(__NetBSD__)
 # ifndef _PATH_MAILDIR
 #  define _PATH_MAILDIR		"/var/spool/mail"
 # endif