Description:
------------
Setting max_input_vars to N allows N+1 variables.

Test script:
---------------
<form action="" method="post">
<?php
$max_input_vars = ini_get('max_input_vars');
for ($i=0; $i < $max_input_vars + 2; $i++) {
	echo "<input type='hidden' name='a$i' value='$i'>\n";
}
var_dump($max_input_vars);
var_dump(count($_POST));
?>
<input type="submit">
</form>


Expected result:
----------------
string(4) "1000"
int(1000)


Actual result:
--------------
string(4) "1000"
int(1001)