$NetBSD: patch-af,v 1.6 2015/12/29 23:34:46 dholland Exp $

Don't declare own errno.

--- lib/unix/unix.h.orig	2006-01-09 22:28:37.000000000 +0000
+++ lib/unix/unix.h
@@ -46,7 +46,6 @@
 
 #include "scheme.h"
 
-extern int errno;
 extern char *index();
 
 extern Object Unix_Errobj, V_Call_Errhandler;