https://bugs.winehq.org/show_bug.cgi?id=47940
--- Comment #28 from Lorenzo Ferrillo lorenzofer@live.it --- Again it's improbable that this will be included to staging.
However to simplify, you may try wine-tkg from Tk-Glitch CLone the Tk-Glitch/PKGBUILDS enter in the wine-tkg-git folder Download the patch, renomonate the extension from .patch to .mypatch, put it inside wine-tkg-userpatches folder.
set the configuration.cfg to your like (setting staging,fsync), and at the bottom of the file set _user_patches="true" if is "false".
from terminal execute makepkg from wine-tkg-git folder. Satisfy the missing dependancies if any.
install the reuslting package with pacman.