Help with memory leak on zend_call_function

Hi all, I am working on this PR: https://github.com/php/php-src/pull/4797 It implements the ability to set a userland callback function that would allow or deny SQL queries in SQLite using its internal authorizer logic. This is a native feature of SQLite that is currently missing from the PHP extension. It's quite straightforward, but I could not find much documentation on zend_call_function and fci/fcc. So I just tried to find existing examples that did the same (calling a userland function callback from the C extension) and mostly used the one from libxml. So it works well, but I'm stuck on a memory leak, even though I'm using zend_fcall_info_args_clear. I'm not sure what's going on here and why. So if someone could take a look or point me in the right direction, that would be great :) Thanks!