Description:
------------
after calling foreach on an undefined variable, you no longer get warnings about the variable being undefined with error_reporting(E_ALL).


Reproduce code:
---------------
<?
error_reporting(E_ALL);
if ($undefined)
 ;
foreach($undefined as $unimportant)
 ;
if ($undefined)
 ;


Expected result:
----------------
Notice: Undefined variable:  undefined in foreach.php on line 3
Notice: Undefined variable:  undefined in foreach.php on line 7


Actual result:
--------------
Notice: Undefined variable:  undefined in foreach.php on line 3