[PATCH 1/1] libwine: Use WINEUSER as user_name, if set

[Andrey Gursky]

Hi,

this is essential for MSYS2 [1]. WINEPREFIX makes wine installation
portable, but once you start wine on a different account, you get also
a different user on a MSYS2 shell.

Regards,
Andrey

[1] https://msys2.github.io/