https://bugs.winehq.org/show_bug.cgi?id=37635
--- Comment #1 from Ken Thomases ken@codeweavers.com --- Thanks for the bug report and patch. Patches are not picked up from bug reports, so please submit it as per http://wiki.winehq.org/SubmittingPatches.
Is there a reason why CREATE_UNICODE_ENVIRONMENT can't just be passed unconditionally?