From b807fc83fe77831fa89977e46958d058fa254ea2 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 19 Feb 2010 16:04:33 +0000
Subject: [PATCH] Added mutex lock to destructor.

---
 include/osg/observer_ptr | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/osg/observer_ptr b/include/osg/observer_ptr
index c8300fbe5..9dbcee3c9 100644
--- a/include/osg/observer_ptr
+++ b/include/osg/observer_ptr
@@ -44,6 +44,7 @@ class observer_ptr : public Observer
 
         ~observer_ptr()
         {
+            OpenThreads::ScopedLock<OpenThreads::Mutex> lock(*getObserverMutex());
             if (_ptr) _ptr->removeObserver(this);
         }