bug#69712: Package author/maintainer printing fix

[Juri Linkov]

> I suggest the following fix instead.
> Can you confirm that it fixes the problem for you as well?
>
> diff --git a/lisp/emacs-lisp/package.el b/lisp/emacs-lisp/package.el
> @@ -2941,7 +2941,7 @@ describe-package-1
>          (insert " "))
>        (insert "\n"))
>      (when maintainers
> -      (unless (proper-list-p maintainers)
> +      (when (stringp (car maintainers))
>          (setq maintainers (list maintainers)))

I confirm this completely fixes the problem.