Update os2web_esdh_provider.mmapi.inc

Got this notice in error report: Notice: Undefined property: stdClass::$field_os2web_meetings_bullets in _os2web_esdh_provider_import_meeting() (line 206 of /var/www/drupal-7.28/sites/all/modules/custom/os2web_esdh_provider/os2web_esdh_provider.mmapi.inc).