From eaba09027ebb2f39e046bf4aa3442a2303aeef2a Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 19 Nov 2008 20:34:53 +0000
Subject: [PATCH] Reverted Kyle Centers mistaken patch that removed a
 _currentContext->valid() that was actually required.

---
 include/osgViewer/ViewerBase | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/osgViewer/ViewerBase b/include/osgViewer/ViewerBase
index 308c83ddc..f6126e79e 100644
--- a/include/osgViewer/ViewerBase
+++ b/include/osgViewer/ViewerBase
@@ -251,7 +251,7 @@ class OSGVIEWER_EXPORT ViewerBase : public virtual osg::Object
         
         inline void releaseContext()
         {
-            if (_currentContext.valid())
+            if (_currentContext.valid() && _currentContext->valid())
             {
                 _currentContext->releaseContext();
             }