From 432a24cf03b9ebdc1baafaaedc74968d52df471b Mon Sep 17 00:00:00 2001
From: Matthew Gregan <kinetik@flim.org>
Date: Tue, 14 Sep 2010 20:23:33 +1200
Subject: [PATCH] Bustage fix for bug 570904.  a=bustage-fix

---
 content/media/webm/nsWebMReader.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/content/media/webm/nsWebMReader.cpp b/content/media/webm/nsWebMReader.cpp
index 6d35097ef32..7cc38bb6652 100644
--- a/content/media/webm/nsWebMReader.cpp
+++ b/content/media/webm/nsWebMReader.cpp
@@ -753,7 +753,7 @@ nsresult nsWebMReader::GetBuffered(nsTimeRanges* aBuffered, PRInt64 aStartTime)
   // Special case completely cached files.  This also handles local files.
   if (stream->IsDataCachedToEndOfStream(0)) {
     uint64_t duration = 0;
-    if (nestegg_duration(mContext, &duration) == 0) {
+    if (mContext && nestegg_duration(mContext, &duration) == 0) {
       aBuffered->Add(aStartTime / MS_PER_S, duration / NS_PER_S);
     }
   } else {