bug#1077: 23.0.60; x-create-frame: (wrong-type-argument number-or-marker-p nil)

[Drew Adams]

>  (define-key menu-bar-showhide-menu [menu-bar-mode]
>    `(menu-item ,(purecopy "Menu-bar") toggle-menu-bar-mode-from-frame
>             :help ,(purecopy "Turn menu-bar on/off")
> -           :button (:toggle . (> (frame-parameter nil 'menu-bar-lines) 0))))
> +           :button (:toggle . (> (frame-parameter (or menu-updating-frame
> +
(selected-frame))
> +
'menu-bar-lines) 0))))

Ignore if this makes no sense; I'm not following the details of this, and I'm
ignorant about menu-updating-frame.

Can menu-updating-frame be nil?  In that case, don't we get the same error/bug?