In 8.0.3, org-meta-return  at the end of a list wrongly adds a checkbox:

1. foo
_  <-- cursor here, org-meta-return

....

1. foo
2. [ ] 

to fix, this patches org-insert-heading to make sure that `org-list-full-item-re' actually matches before passing `(match-string 3)' to `org-insert-item'