Fix some compiler warnings

app/streaming/audio/audio.cpp

@@ -97,6 +97,8 @@ int Session::getAudioRendererCapabilities(int audioConfiguration)
 {
     int caps = 0;
 
+    Q_UNUSED(audioConfiguration);
+
     // All audio renderers support arbitrary audio duration
     caps |= CAPABILITY_SUPPORTS_ARBITRARY_AUDIO_DURATION;
 

app/streaming/bandwidth.cpp

@@ -67,7 +67,7 @@ double BandwidthTracker::GetPeakMbps() {
 }
 
 unsigned int BandwidthTracker::GetWindowSeconds() {
-    return windowSeconds.count();
+    return (unsigned int)windowSeconds.count();
 }
 
 /// private methods