[O] [org-list] problem with checkbox intermediate state

[Matt Lundin]

Previously, when one hit C-c C-c on an item with an intermediate state,
the item would be checked as completed. I.e.,

- [-] Do something

...would become...

- [X] Do something

After the recent changes to org-list, typing C-c C-c on an item with an
intermediate state clears the item:

- [ ] Do something

One must then hit C-c C-c again to check the item off.

Would it be possible to restore the old behavior? A progression from
partial completion to full completion seems the most logical sequence.

Thanks,
Matt