Dispose pcm

src/NadekoBot/Services/Music/MusicPlayer.cs

@@ -180,7 +180,6 @@ namespace NadekoBot.Services.Music
                                  // i don't want to spam connection attempts
                                  continue;
                              }
-                             pcm = ac.CreatePCMStream(AudioApplication.Music, bufferMillis: 500);
                              OnStarted?.Invoke(this, data);
 
                              byte[] buffer = new byte[3840];
@@ -215,6 +214,7 @@ namespace NadekoBot.Services.Music
                                  var flushDelay = Task.Delay(1000, flushToken);
                                  await Task.WhenAny(flushDelay, pcm.FlushAsync(flushToken));
                                  flushCancel.Cancel();
+                                 pcm.Dispose();
                              }
 
                              OnCompleted?.Invoke(this, data.Song);