Tests: Cover generator functions using closure in reference count tests
Tests: Cover generator functions using closure in reference count tests

* This was only covered in Python3 specific tests and by accident so far.

kayhayen/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka,kayhayen/Nuitka,tempbottle/Nuitka,tempbottle/Nuitka,wfxiang08/Nuitka,tempbottle/Nuitka,kayhayen/Nuitka,wfxiang08/Nuitka