ndefined index: vid in xmlsitemap_taxonomy_form

hi i want to delete a taxonomy term this brings me this error
Fatal error: Cannot use object of type stdClass as array in./xmlsitemap/xmlsitemap_taxonomy/xmlsitemap_taxonomy.module on line 82

if i view the taxonomy:
Notice: Undefined index: vid in xmlsitemap_taxonomy_form_taxonomy_form_term_alter() (line 82 of ./xmlsitemap/xmlsitemap_taxonomy/xmlsitemap_taxonomy.module).

drupal 7 alpha3