bug#14582: 24.3.50.1; Strange overlay behavior, when window-start is inside an overlay.

[Eli Zaretskii]

> From: Michael Heerdegen <michael_heerdegen@web.de>
> Cc: larsi@gnus.org,  esabof@gmail.com,  14582@debbugs.gnu.org
> Date: Sun, 06 Feb 2022 03:54:10 +0100
> 
> Hmm - found another infloop, even without invisibility involved, when
> narrowing:
> 
> #+begin_src emacs-lisp
> (progn
>   (dotimes (_ 100) (insert "\
> \(defun foo (x y)
>   1
>   2)\n"))
>   (setq make-window-start-visible t)
>   (goto-char (point-min))
>   (sit-for 1)
>   (forward-line +12)
>   (sit-for 1)
>   (narrow-to-region (point) (save-excursion (forward-line 6) (point)))
>   (sit-for 1)
>   ;; (hs-minor-mode)
>   ;; (hs-hide-all)
>   )
> #+end_src

Fixed, thanks.