From 3fe0074677b6537008a3175cd8632d988a977c80 Mon Sep 17 00:00:00 2001
From: osa <osa@opencascade.com>
Date: Fri, 28 Feb 2014 10:17:21 +0400
Subject: [PATCH] 0024671: TKOpenGl, OpenGl_Context - glGetPointerv might be
 called without GL context

---
 src/OpenGl/OpenGl_Context.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/OpenGl/OpenGl_Context.cxx b/src/OpenGl/OpenGl_Context.cxx
index 4baaaf1099..f577e7e5b4 100644
--- a/src/OpenGl/OpenGl_Context.cxx
+++ b/src/OpenGl/OpenGl_Context.cxx
@@ -146,7 +146,8 @@ OpenGl_Context::~OpenGl_Context()
   myDelayed.Nullify();
 
   if (arbDbg != NULL
-   && caps->contextDebug)
+   && caps->contextDebug
+   && IsValid())
   {
     // reset callback
     void* aPtr = NULL;