MigrateMetatagsquickFieldHandler::prepare() does not properly mimic MigrateFieldHandler::prepare()

The variable typing in MigrateMetatagsquickFieldHandler::prepare() is not the same as MigrateFieldHandler::prepare().

MigrateFieldHandler::prepare()

public function prepare(stdClass $entity, array $field_info, array $instance, array $values);

MigrateMetatagsquickFieldHandler::prepare()

public function prepare($entity, array $field_info, array $instance, array $values)

Notice the missing stdClass variable type for $entity.

I haven't had this be an issue on all sites but on some it's caused a fatal error when running update.php and other admin functions. So it may be a php setting that causes more strictness on the ones where it throws an error. Either way it's safer to do it correctly then not.

Patch to come.