Description:
------------
See below.

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

class Foo {
   const X = 1;
   public function x($x = array(1)) {}
}

$clazz = new ReflectionClass('Foo');
$method = $clazz->getMethod('x');
foreach ($method->getParameters() as $param) {
    if ( $param->isDefaultValueAvailable())
        echo '$', $param->getName(), ' : ', var_export($param->getDefaultValue(), 1), "\n";
}

Expected result:
----------------
No memleak. :)

Actual result:
--------------
$ sapi/cli/php ../bug.php 
$x : array (
  0 => 1,
)
[Tue May 25 19:40:32 2010]  Script:  '../bug.php'
/home/felipe/dev/php5_2/Zend/zend_compile.c(3415) :  Freeing 0x08646078 (16 bytes), script=../bug.php
[Tue May 25 19:40:32 2010]  Script:  '../bug.php'
/home/felipe/dev/php5_2/ext/reflection/php_reflection.c(2174) :  Freeing 0x08648CA4 (44 bytes), script=../bug.php
/home/felipe/dev/php5_2/Zend/zend_variables.c(131) : Actual location (location was relayed)
[Tue May 25 19:40:32 2010]  Script:  '../bug.php'
/home/felipe/dev/php5_2/Zend/zend_variables.c(132) :  Freeing 0x08648D00 (32 bytes), script=../bug.php
/home/felipe/dev/php5_2/Zend/zend_alloc.c(2391) : Actual location (location was relayed)
[Tue May 25 19:40:32 2010]  Script:  '../bug.php'
/home/felipe/dev/php5_2/Zend/zend_hash.c(788) :  Freeing 0x08648D50 (35 bytes), script=../bug.php
/home/felipe/dev/php5_2/Zend/zend_hash.c(388) : Actual location (location was relayed)
=== Total 4 memory leaks detected ===