bug#66391: 30.0.50; Error when saving a face with :underline attribute in Customize

[Eli Zaretskii]

> Date: Sat, 7 Oct 2023 12:02:48 -0300
> From: Mauro Aranda <maurooaranda@gmail.com>
> 
> Hmm, actually, it was I that made a thinko when trying to fix Bug#44331
> that the previously cited commit introduced.
> 
> commit ecec9a259b13d88fa23dde078fba99ae78ef79c7
> Author: Mauro Aranda <maurooaranda@gmail.com>
> Date:   Sun Nov 1 10:10:08 2020 -0300
> 
>      Fix saving a face setting with Customize
> 
>      * lisp/cus-edit.el (custom-face-save): Make sure we back up into the
>      :shown-value property what the user has edited so far, if we are going
>      to recreate the custom-face widget.  (Bug#44331)

Thanks, installed on master and closing the bug.