bug#52491: 28.0.90; Regression in window deletion with minibuffer

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: 52491@debbugs.gnu.org
> Date: Fri, 17 Dec 2021 10:25:52 +0200
> 
> Anyway, here is the patch for the release branch
> that fixes the previous regression:

Thanks.

Martin, any comments on this for the release branch?  It looks
non-trivial to me, and delete-window is a low-level API.