The installed wine.desktop points to wine instead of wine64 on amd64.
Thanks for reporting this and submitting a patch.
I will admit I started at the diff for the change related to wineapploader.in for a bit (looking at the patch in the e-mail first) unitl I realized you just added a trailing space. Please don't do that (and review the final patch before submitting it).
Can you please break the sentence in the comment, something like "Also fix the desktop file." and format not to exceed 78 columns (which predates your patch, but since we are touching that line anyway)?
The change as such looks fine to me with the two caveates above, but let's give David (Naylor) a chance to chime in. If you don't hear from him within a couple of days, it's okay to proceed.