Erros on term deletion

When we delete term from vocabulary used for menu and have enabled module 'locale' we get errors.
Problem is in taxonomy menu.

Implemention of hook_taxonomy invoke hook hook taxonomy_menu_$op, where $op is operation we get on hook_taxonomy.
Example taxonomy_menu_taxonomy_menu_delete.
Problem is that when it invokes taxonomy_menu_taxonomy_menu_insert or taxonomy_menu_taxonomy_menu_update this functions returns term object as a result. But taxonomy_menu_taxonomy_menu_delete does not.
So next code fails.

//here we invoke taxonomy_menu_taxonomy_menu_delete
$item = module_invoke_all('taxonomy_menu_'. $op, $item);

// Here $item is empty so _taxonomy_menu_save fails.
return _taxonomy_menu_save($item);

I create a patch for this.
Thanks.