From d6734347fbbcad0442d966e778447024beb689f1 Mon Sep 17 00:00:00 2001
From: Brian Norris <banorris@uci.edu>
Date: Fri, 4 May 2012 00:15:31 -0700
Subject: [PATCH] tree: include cstddef for NULL

Needed for newer, stricter compilers...
---
 tree.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tree.h b/tree.h
index d45fd83..864ce8f 100644
--- a/tree.h
+++ b/tree.h
@@ -3,6 +3,7 @@
 
 #include <set>
 #include <map>
+#include <cstddef>
 #include "threads.h"
 
 class ModelAction;
-- 
2.34.1