[Bug 50149] New: Chromium/MS WebView2 depends on TEB->ReservedForOle 'apt_mask' value

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50149

Bug ID: 50149
           Summary: Chromium/MS WebView2 depends on TEB->ReservedForOle
                    'apt_mask' value
           Product: Wine
           Version: 5.21
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ole32
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Chromium reaches into the TEB->ReservedForOle struct to read the current COM
apartment type:

https://source.chromium.org/chromium/chromium/src/+/master:base/win/com_init...

Wine's 'struct tlsdata' in dlls/combase/combase_private.h has the 'apt_mask'
member in the right place, but it isn't set anywhere.
This causes MS WebView2 to fail on initialization, and might cause other
failures in Chromium.

(also, it looks like the entire SOleTlsData layout has been open-sourced as
part of .NET core:
https://github.com/dotnet/coreclr/blob/master/src/vm/oletls.h)