[PATCH 0/1] MR4716: win32u: Use 32-bit window extra size on wow64.

[Jacek Caban (＠jacek)]

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=55582

I don't know any application requiring the size to be 8, so I hope this is fine. If we find one, I guess we could guard it with a Windows version check.