Description:
------------
The following test case produces noise when a lint is done, although the lint does ultimately pass.

Clearly the code is doing something unnecessary, but I don't believe opcache should be complaining about it.

This affects PHP 5.2 and also current git HEAD.

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

function x($y)
{
    if (is_array($y)) {
        $z = is_array($y) ? array() : array($y);
    }
}


Expected result:
----------------
No syntax errors detected in (...)

Actual result:
--------------
In function ::x (after sccp):
var 8 (TMP) has array key type but not value type
var 9 (TMP) has array key type but not value type
var 10 (TMP) has array key type but not value type
var 11 (CV $z) has array key type but not value type

No syntax errors detected in (...)