[Bug 53960] ucrt has different struct layout than msvcrt

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53960

--- Comment #7 from cqwrteur  ---
Created attachment 73547
  --> https://bugs.winehq.org/attachment.cgi?id=73547
A patch to fix the layout issue first

I am still trying to understand whether the _lock_file and _unlock_file part
need to change too since I do not know how ms deals with this before UCRT.
Also, according to the API documentation of MSDN, _lock and _unlock have been
deprecated. The implementation in _UCRT always locks the CriticalSection in
_iobuf even if it lives in _IOB_ENTRIES.

I would like to listen to how wine is going to deal with this.