From 42791de89bc3d03acdfd2d1122a7f932dd09ce62 Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Sun, 4 Nov 2012 08:09:30 -0500
Subject: [PATCH] refptr allows NULL to be assigned to it

---
 src/common/refptr.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/common/refptr.h b/src/common/refptr.h
index 6209953..9eefb3f 100644
--- a/src/common/refptr.h
+++ b/src/common/refptr.h
@@ -85,7 +85,10 @@ template <typename T> void refptr<T>::destroy()
     {
         if (*m_refCount <= 1)
         {
-            delete m_ptr;
+            if (m_ptr != NULL)
+            {
+                delete m_ptr;
+            }
             delete m_refCount;
         }
         else