bug#23369: 25.0.93; CANNOT_DUMP build fails if resizing terminal during startup in tty mode

[Eli Zaretskii <eliz@gnu.org>]

> From: Glenn Morris <rgm@gnu.org>
> Cc: fredrik@fornwall.net,  23369@debbugs.gnu.org
> Date: Wed, 27 Apr 2016 17:01:13 -0400
> 
> *** a/lisp/window.el
> --- b/lisp/window.el
> ***************
> *** 8520,8525 ****
> --- 8520,8526 ----
>   displaying that processes's buffer."
>     (let ((processes (process-list))
>           (process-windows nil))
> +     (when processes
>         (walk-windows
>          (lambda (window)
>            (let ((buffer (window-buffer window))
> ***************
> *** 8538,8544 ****
>                           nil)
>                       (setf iter (cdr iter)))))))
>        1 t)
> !     process-windows))
>   
>   (defun window--adjust-process-windows ()
>     "Update process window sizes to match the current window configuration."
> --- 8539,8545 ----
>                             nil)
>                         (setf iter (cdr iter)))))))
>          1 t)
> !       process-windows)))
>   
>   (defun window--adjust-process-windows ()
>     "Update process window sizes to match the current window configuration."

Btw, the change which introduced these calls (made, probably
inadvertently, at startup as well, something that doesn't seem to make
sense to me) is completely devoid of any documentation: the feature is
not mentioned in NEWS and not in any manual, even though it includes a
defcustom.