notices when changing admin page "show/hide descriptions"

notice: Undefined index: openidurl_server in /home/bangpound/drupal6-site/modules/openidurl/openidurl.module on line 155.
notice: Undefined index: openidurl_delegate in /home/bangpound/drupal6-site/modules/openidurl/openidurl.module on line 156.
notice: Undefined index: openidurl_xrds in /home/bangpound/drupal6-site/modules/openidurl/openidurl.module on line 157.

I think this is because the preference for the descriptions on the admin page is stored in the user's variables, and when that preference is altered, there isn't any openidurl items in the form submission.

I just put in a check.. it works for me, but I also have not studied the code of this module carefully!