On feeds import, wrong deltas when entity has multiple 'office_hours'-fields.

In case when entity bundle contains more than one 'office_hours' field the office_hours_feeds_set_target() assign wrong deltas for the second field on feed import (and any further office_hours field inside current entity).
This is because of condition that handles the value of $sv_index static var - the var value is reset to 0 in case when $entity->vid is changed. Need to introduce the same logic for the next office hour field inside the same entity.

Thanks in advance.