Notice: Undefined variable: not_selected_content_types a node_revision_restrict_form_submit

If you go to admin/config/content/node_revision_restrict and select and limit all content types recive this notice and warning

Notice: Undefined variable: not_selected_content_types a node_revision_restrict_form_submit() (línia 128 de /var/local/html/dadesobertes/sites/all/modules/contrib/node_revision_restrict/node_revision_restrict.module).

Warning: Invalid argument supplied for foreach() a node_revision_restrict_form_submit() (línia 128 de /var/local/html/dadesobertes/sites/all/modules/contrib/node_revision_restrict/node_revision_restrict.module).