Description:
------------
The following code produse a memory leak

Reproduce code:
---------------
<?php
$a->{'a'.'b'};
?>

Expected result:
----------------
Notice: Undefined variable: a

Notice: Trying to get property of non-object


Actual result:
--------------
Notice: Undefined variable: a

Notice: Trying to get property of non-object
[Thu Jan 15 11:36:45 2009]  Script:  '-'
/home/dmitry/php/php5.3/Zend/zend_operators.c(1269) :  Freeing 0x0AA20F64 (3 bytes), script=-
=== Total 1 memory leaks detected ===