$NetBSD: patch-ad,v 1.1 2006/01/13 21:51:06 joerg Exp $

--- io.c.orig	2006-01-13 21:48:53.000000000 +0000
+++ io.c
@@ -1055,7 +1055,6 @@ int interesting;	/* pid of interest, if 
 	int pid;
 	int status = 0;
 	struct redirect *redp;
-	extern int errno;
 
 	hstat = signal(SIGHUP, SIG_IGN);
 	istat = signal(SIGINT, SIG_IGN);