fixing setting kleinanzeigen listings to inactive if not available anymore

lib/provider/wohnungsboerse.js

@@ -4,6 +4,7 @@
  */
 
 import * as utils from '../utils.js';
+import checkIfListingIsActive from '../services/listings/listingActiveTester.js';
 
 let appliedBlackList = [];
 
@@ -40,6 +41,7 @@ const config = {
   },
   normalize: normalize,
   filter: applyBlacklist,
+  activeTester: checkIfListingIsActive,
 };
 
 export const init = (sourceConfig, blacklistTerms) => {