migration doesn't set the timezone

In the prepare() method of DateMigrateFieldHandler in date.migrate.inc, the timezone of the items are never set. That is,

        $return[$language][$delta]['value'] = $from;
        if (!empty($to)) {
          $return[$language][$delta]['value2'] = $to;
        }

should be

        $return[$language][$delta]['value'] = $from;
	$return[$language][$delta]['timezone'] = $timezone;
        if (!empty($to)) {
          $return[$language][$delta]['value2'] = $to;
        }

. A patch is attached.

I'm not completely familiar with the code, though. Instead of using $timezone directly, should we use date_get_timezone($field_info['settings']['tz_handling'], $timezone);?

As a side note, I noticed another bug while digging through the method. If a delta has a missing value, the function returns prematurely. It should set the NULL value for the delta, and continue the for loop. This is included in the patch below.