Description:
------------
Nested uasort function call broken. see also bug #33286, same  topic - other function ;-)



Reproduce code:
---------------
<?php

function test_subfunc(&$item1, $key)
{
   echo "&nbsp;&nbsp;test_subfunc<br/>";
}

function test_func($item2, $key)
{
   echo "test_func<br/>";

   $arr = array(1, 2, 3, 4);
   uasort($arr, 'test_subfunc');
}

$x = array(5,6,7);
uasort($x, 'test_func');

?>


Expected result:
----------------
test_func
  test_subfunc
  test_subfunc
  test_subfunc
  test_subfunc
test_func
  test_subfunc
  test_subfunc
  test_subfunc
  test_subfunc
test_func
  test_subfunc
  test_subfunc
  test_subfunc
  test_subfunc


Actual result:
--------------
test_func
  test_subfunc
  test_subfunc
  test_subfunc
  test_subfunc
  test_subfunc