Function clone_inttype() is never invoked

[krader1961]

I noted in this comment in issue #1150 that the union Value member funp is stored to in exactly one place and never fetched. I decided to instrument the code to understand under what conditions clone_inttype() is called. It turns out it is never invoked when running the unit tests or in every day use by me.

It is unclear what the purpose of clone_inttype() is. There is only one other analogous function, clone_chtype(), and it is invoked many times when running the unit tests.