Description:
------------
Outputting live ranges gives me:

LIVE RANGES:
        6: L6 - L7
(tmp/var)
        3: L2 - L9

Now, if there is an exception thrown between opline 2 and 5, http://lxr.php.net/xref/PHP_MASTER/Zend/zend_execute.c#2586 has a condition with a break;, hence cleanup won't be done for temporary 3 (the array).

Removing that break; fixes it, but maybe there is a better fix?

Test script:
---------------
try  {
        $a = "1";
        [1, (y().$a.$a) . ($a.$a)];
} catch (Error $e) {
        var_dump($e->getMessage());
}

Actual result:
--------------
HashTable leaks:

[Tue Dec 22 13:21:38 2015]  Script:  '/Users/Bob/php-src-X/_'
Zend/zend_vm_execute.h(7076) :  Freeing 0x10BC5A360 (56 bytes), script=/Users/Bob/php-src-X/_
[Tue Dec 22 13:21:38 2015]  Script:  '/Users/Bob/php-src-X/_'
/Users/Bob/php-src-X/Zend/zend_hash.c(133) :  Freeing 0x10BC60A00 (264 bytes), script=/Users/Bob/php-src-X/_
=== Total 2 memory leaks detected ===