[Bug 39678] Zararadio can not read folder/file name path with Latin characters

https://bugs.winehq.org/show_bug.cgi?id=39678

--- Comment #19 from Piotr Caban  ---
(In reply to Piotr Caban from comment #18)
> (In reply to Nikolay Sivov from comment #17)
> > Created attachment 53135 [details]
> > patch
>
> The patch looks good for me.

Sorry, I've missed something. There should be cast to (unsigned _CHAR_) instead
of (unsigned char). Your patch will not work for wchar_t case (I was not
testing it, it's just from reading the code).