- fixed crash with non-looping music ending.

In this case it was the song terminating the stream, with the new setup the main music code has to do this itself.

libraries/zmusic/musicformats/music_midi.cpp

@@ -979,6 +979,7 @@ bool MIDIStreamer::SetSubsong(int subsong)
 
 bool MIDIStreamer::ServiceStream(void* buff, int len)
 {
+	if (!MIDI) return false;
 	return static_cast<SoftSynthMIDIDevice*>(MIDI.get())->ServiceStream(buff, len);
 }
 

src/sound/s_music.cpp

@@ -277,11 +277,18 @@ void S_UpdateMusic ()
 		// [RH] Update music and/or playlist. IsPlaying() must be called
 		// to attempt to reconnect to broken net streams and to advance the
 		// playlist when the current song finishes.
-		if (!mus_playing.handle->IsPlaying() && PlayList)
+		if (!mus_playing.handle->IsPlaying())
+		{
+			if (PlayList)
 			{
 				PlayList->Advance();
 				S_ActivatePlayList(false);
 			}
+			else
+			{
+				S_StopMusic(true);
+			}
+		}
 	}
 }