[Bug 50297] Blindwrite 7 crashes with a stack overflow (followup to #49092)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=50297

--- Comment #2 from Bernhard Übelacker <bernhardu at mailbox.org> ---
Created attachment 68869
  --> https://bugs.winehq.org/attachment.cgi?id=68869
One iteration of registry accesses with WINEDEBUG=+relay

I am not sure. I have just looked into a relay log and found just the same
sequence of registry accesses of QueryInfoKey, EnumValue, OpenKeyEx,
SetValueEx and CloseKey. I could not see an obvious issue with them,
except a GetFileAttributesW with an empty filename...
(See attached file for one iteration.)
Might this be a kind of anti tamper protection?

If this cannot be reproduced, it might show up when adding a local variable in
wine_server_call which occupies some more bytes on the stack.

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