fix for 7.3.0alpha4

[remicollet]

From UPGRADING.INTERNALS

 w. zend_class_entry.iterator_funcs have been replaced by iterator_funcs_ptr.
    You don't have to set its value, setting parent.funcs in the get_iterator
    function is enough.

[marinesovitch]

Thnx for patch - it was applied in our internal repo, and will be available on the github with the next version (8.0.12). Push is expected soon.

Sorry for delay with answer, but we weren't sure whether it will be possible to apply it in 8.0.12 yet, or in the next version expected within next ~3 months (8.0.13) :-}