From e5d81e17d3742f0925426f2f3a730920d44fba5a Mon Sep 17 00:00:00 2001
From: Moonchild <moonchild@palemoon.org>
Date: Thu, 10 Feb 2022 10:48:24 +0000
Subject: [PATCH] [DOM media] Add a lock around Reset() in WebMBufferedParser

---
 dom/media/webm/WebMBufferedParser.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dom/media/webm/WebMBufferedParser.cpp b/dom/media/webm/WebMBufferedParser.cpp
index 979308cf0c..c3f1266cca 100644
--- a/dom/media/webm/WebMBufferedParser.cpp
+++ b/dom/media/webm/WebMBufferedParser.cpp
@@ -425,6 +425,7 @@ void WebMBufferedState::NotifyDataArrived(const unsigned char* aBuffer, uint32_t
 }
 
 void WebMBufferedState::Reset() {
+  ReentrantMonitorAutoEnter mon(mReentrantMonitor);
   mRangeParsers.Clear();
   mTimeMapping.Clear();
 }