bug#64543: [PATCH] package-report-bug: don't fail on custom groups defined by eval

[Eli Zaretskii]

> From: Philip Kaludercic <philipk@posteo.net>
> Cc: sbaugh@catern.com,  64543@debbugs.gnu.org, "'Eli Zaretskii'" 
> <eliz@gnu.org>
> Date: Fri, 14 Jul 2023 19:44:15 +0000
> 
> Eli, would it be OK to push this to emacs-29, as this is a bug in the
> existing code?  Most of the changes are indentation/whitespace changes
> anyway.

I don't understand the cases in which this bug happens, and so cannot
make the decision.  The entire discussion of this bug never described
such a case, AFAICT.  (Also, the commit log message could use some
loving care: what does it mean when it says "Previously"?)