bug#58193: 29.0.50; Screen flickers on with-locale-environment

[Eli Zaretskii]

> From: Pedro Andres Aranda Gutierrez <paaguti@gmail.com>
> Date: Fri, 30 Sep 2022 15:05:34 +0200
> 
> Include the following code in *scratch*
> 
> (with-locale-environment "C"
>   (insert (format-time-string ";; %a, %d %b %Y %H:%m:%S %z")))
> 
> Evaluate with C-c C-e and experience a screen flicker

with-locale-environment calls set-terminal-coding-system, which calls
redraw-frame.  That's the reason you see the flicker.

I see no bug here, FWIW.