$NetBSD: patch-ac,v 1.1 2011/01/30 02:08:19 markd Exp $

Fix build with gcc4.3

--- src/diff.cpp.orig	2006-10-30 22:24:29.000000000 +0000
+++ src/diff.cpp
@@ -17,6 +17,7 @@
 
 #include <stdio.h>
 #include <iostream>
+#include <cstdlib>
 
 #include "diff.h"
 #include "fileaccess.h"