From a2b4191bd428d263940a51947af0371e2dd6daef Mon Sep 17 00:00:00 2001
From: Bas Schouten <bschouten@mozilla.com>
Date: Wed, 14 Jul 2010 00:19:43 +0200
Subject: [PATCH] Bug 578500: Clear mTarget at the end of a transaction. r=roc

---
 gfx/layers/d3d9/LayerManagerD3D9.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gfx/layers/d3d9/LayerManagerD3D9.cpp b/gfx/layers/d3d9/LayerManagerD3D9.cpp
index 7fc957eef1d0..b29278e6ce14 100644
--- a/gfx/layers/d3d9/LayerManagerD3D9.cpp
+++ b/gfx/layers/d3d9/LayerManagerD3D9.cpp
@@ -246,6 +246,8 @@ LayerManagerD3D9::EndTransaction(DrawThebesLayerCallback aCallback,
   /* Clean this out for sanity */
   mCurrentCallbackInfo.Callback = NULL;
   mCurrentCallbackInfo.CallbackData = NULL;
+  // Clear mTarget, next transaction could have no target
+  mTarget = NULL;
 }
 
 void