$NetBSD: patch-ab,v 1.4 1999/11/01 10:23:45 sakamoto Exp $

--- ./sbr/refile.c.orig	Wed Dec  1 13:01:26 1993
+++ ./sbr/refile.c	Mon Nov  1 19:13:30 1999
@@ -6,4 +6,7 @@
 #include "../h/mh.h"
 #include <stdio.h>
+#ifdef	UNISTD
+#include <unistd.h>
+#endif
 
 int     refile (arg, file)