Created Issue: Attempting to add a dicrectory to a disposed zip ends up in a deadlock [16072]

Using a powershell script, I was creating multiple zip files and forgot to new up my zip object. This resulted in a deadlock at ParallelDeflateOutputStream.EmitPendingBuffers

I think the problem is here: _newlyCompressedBlob.WaitOne();

Either way a simple check that the object is not disposed and throwing an exception should prevent this.. Took me forever to figure out that it was my fault.