recording: avoid deadlock in audio_receive_thread

GitLab: #518
Change-Id: I31a5b290cd555e345de76f12b9a59c4b9b077756

src/media/audio/audio_receive_thread.cpp

@@ -50,6 +50,7 @@ AudioReceiveThread::AudioReceiveThread(const std::string& id,
 
 AudioReceiveThread::~AudioReceiveThread()
 {
+    onSuccessfulSetup_ = nullptr;
     loop_.join();
 }