Description:
------------
Calling CairoPattern::getMatrix() on a CairoPattern results 
in a memory leak.

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

$m = new CairoMatrix();
$s = new CairoSolidPattern(1, 1, 1); 
$s->setMatrix($m);

$x = $s->getMatrix();

Expected result:
----------------
No errors.

Actual result:
--------------
[Thu Jul  8 15:49:14 2010]  Script:  '/usr/src/php-
cairo/clonetest.php'
/usr/src/php-cairo2/cairo_matrix.c(106) :  Freeing 0x0A2C4F18 
(48 bytes), script=/usr/src/php-cairo/clonetest.php
/usr/src/php_5_3_2/Zend/zend_alloc.c(2444) : Actual location 
(location was relayed)
=== Total 1 memory leaks detected ===