[Bug 53926] New typelib marshaller depends on IID_IDispatch support from target interface

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53926

--- Comment #2 from Zeb Figura  ---
Thanks for the detailed report. I've submitted a merge request that should
hopefully fix this:

https://gitlab.winehq.org/wine/wine/-/merge_requests/1800/diffs

With the attached test it seems to get past that error, but then crashes at the
"IUnknown_Release(unk)" on line 550. Since "unk" was never properly initialized
I'm assuming that's the "correct" behaviour, but I never bothered testing with
the old typelib marshaller.

FWIW, the patch from comment 1 is probably wrong, for reasons that are mostly
described in the patch I sent, but it's annoyingly difficult to actually test.