While that may be true (or may not; it's certainly not obvious), it doesn't change the truth of my assertion:

> If a tree has more than one leaf node, #6 will be correct while #7 will not.

It's certainly not impossible that the tree will have more than one leaf after future changes.
This leads me to say that #6 [is more correct](https://github.com/flintwork/mccabe/pull/7#discussion_r11782577).