When play a video (failed one/corrupt), it can lead to block MP.
It's reproducible in MyPics.

h4. Steps to Reproduce
Try to play a failed video within MyPics.
When Cleanup code is reach (VideoPlayerVMR9.cs)
MP stay in loop on 'GC.WaitForPendingFinalizers();' line.


h4. Additional Information
To solve it, we need to get ride on this line.