Some permissions are granted before being assigned.

The attached patch prevents the following error from occurring when installing CiviCRM on Drupal 7.x-dev:

PDOException: SQLSTATE[23000]: Integrity constraint violation: 1048 Column 'module' cannot be null: INSERT INTO

{role_permission}

(rid, permission, module) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2); Array ( [:db_insert_placeholder_0] => 2 [:db_insert_placeholder_1] => access CiviMail subscribe/unsubscribe pages [:db_insert_placeholder_2] => ) in user_role_grant_permissions() (line 3029 of /var/www/modules/user/user.module).