$NetBSD: patch-ad,v 1.3 2015/12/29 23:34:48 dholland Exp $

Don't declare own errno.

--- io.c.orig	2010-02-20 07:58:14.000000000 +0000
+++ io.c
@@ -1072,7 +1072,6 @@ 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);