Description:
------------
The number of parameters returned by reflection is wrong for inflate_init() and inflate_add().

See :
http://php.net/manual/en/function.inflate-init.php
http://php.net/manual/en/function.inflate-add.php


Test script:
---------------
<?php

$r = new ReflectionFunction('inflate_init');
var_dump($r->getNumberOfRequiredParameters());
var_dump($r->getNumberOfParameters());

$r = new ReflectionFunction('inflate_add');
var_dump($r->getNumberOfRequiredParameters());
var_dump($r->getNumberOfParameters());


Expected result:
----------------
int(1)
int(2)
int(2)
int(3)

Actual result:
--------------
int(1)
int(1)
int(2)
int(2)