[Ohrrpgce] SVN: teeemcee/10262 Fix a couple possible crashes if a menu has no selectable items. Added M

[Ralph Versteegen]

I think there are probably more cases in which menus with no selectable
items crash or cause issues. For a start, I notice the mouse hover
highlighting is broken in such a menu.
Code which manipulates MenuStates directly tends to be quite dense, and
spread out all over the place with little consistency as to how
init_menu_state, etc, are used, and now there's a new edge case that all
that code needs to account for. It didn't occur to me that this was going
to be a problem.

On 31 March 2018 at 03:38, <subversion at hamsterrepublic.com> wrote:

> teeemcee
> 2018-03-30 07:38:00 -0700 (Fri, 30 Mar 2018)
> 92
> Fix a couple possible crashes if a menu has no selectable items. Added
> MenuState.pt_valid().
> ---
> U   wip/game.bas
> U   wip/menus.bas
> U   wip/udts.bi
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