From 1177da898b608b5a01fbd56440f0da8cd073afac Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Mon, 5 Nov 2012 22:32:57 +0000
Subject: [PATCH] Fix potential crash if a context with no bindings is released
 (issue #736).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@900 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
---
 cef1/libcef/v8_impl.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cef1/libcef/v8_impl.cc b/cef1/libcef/v8_impl.cc
index a46a84de8..b39a958a4 100644
--- a/cef1/libcef/v8_impl.cc
+++ b/cef1/libcef/v8_impl.cc
@@ -121,6 +121,9 @@ class CefV8TrackManager {
 
       v8::Handle<v8::Object> object = context->Global();
       v8::Handle<v8::Value> value = object->GetHiddenValue(context_state_key_);
+      if (value.IsEmpty())
+        return;
+
       scoped_refptr<CefV8ContextState> state =
           static_cast<CefV8ContextState*>(v8::External::Unwrap(value));
       state->Detach();