Possibly a bug? Latest version of boxes throws "missing argument 2

Sorry, this is a very rough and ready post and there is probably a better way of dealing with this, but just so *someone* knows about this bug before I forget, I began seeing this error after upgrading to the latest version of boxes:

warning: Missing argument 2 for boxes_spaces_dashboard_block_access_alter() in ~/profiles/openatrium/modules/contrib/boxes/boxes.module on line 337.

Changing line 337 from:

function boxes_spaces_dashboard_block_access_alter(&$access, $block) {

... to:

function boxes_spaces_dashboard_block_access_alter(&$access, $block = NULL) {

Has fixed the problem temporarily. For completeness, I added an is_object check around the function itself to avoid errors, so the resulting code is now (from line 337):

function boxes_spaces_dashboard_block_access_alter(&$access, $block = NULL) { // <-- " = NULL" has been added here
  if (is_object($block)) { // <-- this entire line has been added
    if ($block->module === 'boxes') {
      // This is the add block, give access to admins.
      if ($block->delta === 'add') {
        $access = boxes_access_admin();
      }
      // If this box is specific to the current space, allow access.
      else if (module_exists('spaces') && $space = spaces_get_space()) {
        $in_space = $space->controllers->boxes->get($block->delta, 'space');
        $access = $access || !empty($in_space);
      }
      // Outside of spaces, give admins access to all boxes.
      else {
        $access = boxes_access_admin();
      }
    }
  } // <-- this entire line has been added
}

Would it be worthwhile adding this in to head?

Alex