Description:
------------
Within generators, the temporary argument of GENERATOR_RETURN is ignored while reindexing temporaries in a finally block.
This leads to illegal reuse of a still live temporary and will leak/doubly use the temporary value returned by the generator.

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

$g = (function($a) {
	try {
		return $a + 1;
	} finally {
		$b = $a + 2;
		var_dump($b);
	}
	yield; // Generator
})(1);
$g->next();
var_dump($g->getReturn());


Expected result:
----------------
int(3)
int(2)

Actual result:
--------------
int(3)
int(3)