incorrect warning hint against reference (&) in foreach construct

(Based on user's feedback)

Go Options>Editor>Hints, Language PHP, check "Experimental" and
"Variable might have not been initialized", then OK.

Now editor shows hint warning to the following code.  This code
should be valid.

        $array_variable = array(1, 1);
        foreach ($array_variable as &$variable) {
            ;
        }

This issue can reproduced on NetBeans 6.5 and also on Dev Build
200811200201.