bug#27743: 26.0.50; Native Line Numbers seem to reset Tab Width

[Eli Zaretskii]

> From: Frank Terbeck <ft@bewatermyfriend.org>
> Date: Mon, 17 Jul 2017 22:56:46 +0200
> 
> 
> This can in fact be reproduced from "emacs -Q". Just open a file that
> uses tabs for indentation. Then set tabulator width:
> 
>   (setq tab-width 4)
> 
> The display of the tabulator width should now visibly be four
> characters. Now enable line number display:
> 
>   (setq display-line-numbers 'relative)
> 
> Now the tabulator display returns to eight characters. This is the bug
> that I'm reporting. Disabling line number display:
> 
>   (setq display-line-numbers nil)
> 
> ...returns the tabulator width to four characters.

Thanks, fixed.  (A stupid mistake which is exposed only when using
tab-width of 4 or less, whereas I, believe it or not, did all my
testing with tab-width = 5 and more.)