StreamProvider : Impossible to create a new stream if the previous one was not retrieved.

[mohdje]

Here is the issue:

• I have a torrent with multiple files
• I try to stream a file (torrentManagerFile1) using this piece of code :
  await torrentManager.StreamProvider.CreateStreamAsync(torrentManagerFile1, true, cancellationToken);
• I cancel the Task before ActiveStream is returned from CreateStreamAsync().
• Then if I try to stream another file (torrentManagerFile2) from same torrent calling:
  await torrentManager.StreamProvider.CreateStreamAsync(torrentManagerFile2, true, cancellationToken);
  The following error is thrown
  InvalidOperationException ("You must Dispose the previous stream before creating a new one.")
• Looking at the code of StreamProvider.CreateStreamAsync() it seems that if the task is canceled the ActiveStream still has the Disposed property to false, so this is why the issue occurs.