Merge pull request #4316 from tulibraries/BL-1852

BL-1852 Handle empty collections in cdm integration

app/search_engines/bento_search/cdm_engine.rb

@@ -92,7 +92,7 @@ def cdm_collection_name(cdm_alias)
       cdm_url = "https://digital.library.temple.edu/digital/bl/dmwebservices/index.php?q=dmGetCollectionList/json"
       response = JSON.load(URI.open(cdm_url))
       collection = response.select { |collection| collection["secondary_alias"] if collection["secondary_alias"] == cdm_alias }
-      collection.first["name"]
+      collection.first["name"] unless collection.blank?
     end
   end
 end