bug#60096: 29.0.60; Crash in format_mode_line_unwind_data

[Eli Zaretskii]

> From: Juri Linkov <juri@linkov.net>
> Cc: 60096-done@debbugs.gnu.org
> Date: Fri, 16 Dec 2022 09:31:36 +0200
> 
> I confirm that it's fixed, so closing.
> 
> PS: I wonder why now *scratch* shows keybindings inside
> non-standard quotation marks: "C-x C-f"?  Why not 'C-x C-f'?
> Or `C-x C-f'?

I'm working on a better fix for this, which will revert back to how we
were showing the bindings originally.  Whether what we did originally
is the best way is a separate issue.