From a28db973514d93f58f9a405c84b2febedd0ed922 Mon Sep 17 00:00:00 2001
From: Paul Adenot <paul@paul.cx>
Date: Wed, 24 Mar 2021 10:25:45 +0000
Subject: [PATCH] Bug 1683822 - Unregister the device changed callback before
 destroying an AudioCallbackDriver. r=pehrsons

Differential Revision: https://phabricator.services.mozilla.com/D101178
---
 dom/media/GraphDriver.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dom/media/GraphDriver.cpp b/dom/media/GraphDriver.cpp
index ae87dce18627..bbed1eca4156 100644
--- a/dom/media/GraphDriver.cpp
+++ b/dom/media/GraphDriver.cpp
@@ -791,6 +791,9 @@ void AudioCallbackDriver::Shutdown() {
   LOG(LogLevel::Debug,
       ("%p: Releasing audio driver off main thread (GraphDriver::Shutdown).",
        Graph()));
+
+  cubeb_stream_register_device_changed_callback(mAudioStream, nullptr);
+
   RefPtr<AsyncCubebTask> releaseEvent =
       new AsyncCubebTask(this, AsyncCubebOperation::SHUTDOWN);
   releaseEvent->Dispatch(NS_DISPATCH_SYNC);