$NetBSD: patch-ai,v 1.1 2006/01/13 15:16:14 joerg Exp $

--- src/ustring.c.orig	2006-01-13 15:00:13.000000000 +0000
+++ src/ustring.c
@@ -26,8 +26,6 @@
 
 #include "util.h"				/* emalloc() */
 
-extern int errno;
-
 /*
  * The USTRING structure (defined in clex.h) can store a string
  * of unlimited length. The memory is allocated dynamically.