$NetBSD$

--- rvt/command.c.orig	2008-02-27 14:35:55.000000000 -0700
+++ rvt/command.c	2008-02-27 14:37:56.000000000 -0700
@@ -453,7 +453,6 @@
 	unsigned char *s;
 	int count, sv;
 	unsigned char mask = is_eightbit() ? 0xff : 0x7f;
-	extern int errno;
 
 	if (com_stack_top > com_stack)
 		return(*--com_stack_top);
