[Bug 48763] X2: The Threat crashes after opening

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48763

--- Comment #1 from Anton Baskanov  ---
I've done some debugging, and it looks that the regression is not caused
directly by the specified commit. This commit is what allows the app to proceed
further and trigger an unrelated issue.

The crash is actually caused by a NULL pointer dereference in
dmo_wrapper_cleanup_stream, where IUnknown::QueryInterface is called on
filter->dmo. filter->dmo is in turn NULL because dmo_wrapper_filter_Init is
called with an unregistered CLSID (CLSID_CWMSPDecMediaObject).

There are amstream patches that were committed recently that affect this crash.
As of Wine 5.5, the crash happens when exiting the game, not on the start.