reset the incoming audio seq stats in Application::nodeKilled when audiomixer is killed

interface/src/Application.cpp

@@ -3291,6 +3291,10 @@ void Application::nodeKilled(SharedNodePointer node) {
     _particleEditSender.nodeKilled(node);
     _modelEditSender.nodeKilled(node);
 
+    if (node->getType() == NodeType::AudioMixer) {
+        QMetaObject::invokeMethod(&_audio, "resetIncomingMixedAudioSequenceNumberStats");
+    }
+
     if (node->getType() == NodeType::VoxelServer) {
         QUuid nodeUUID = node->getUUID();
         // see if this is the first we've heard of this node...

interface/src/Audio.cpp

@@ -121,6 +121,8 @@ void Audio::init(QGLWidget *parent) {
 void Audio::reset() {
     _ringBuffer.reset();
     _outgoingAvatarAudioSequenceNumber = 0;
+    _audioMixerInjectedStreamStatsMap.clear();
+    _incomingMixedAudioSequenceNumberStats.reset();
 }
 
 QAudioDeviceInfo getNamedAudioDeviceForMode(QAudio::Mode mode, const QString& deviceName) {

interface/src/Audio.h

@@ -83,6 +83,7 @@ public slots:
     void addSpatialAudioToBuffer(unsigned int sampleTime, const QByteArray& spatialAudio, unsigned int numSamples);
     void handleAudioInput();
     void reset();
+    void resetIncomingMixedAudioSequenceNumberStats() { _incomingMixedAudioSequenceNumberStats.reset(); }
     void toggleMute();
     void toggleAudioNoiseReduction();
     void toggleToneInjection();