reformatting address for mapquest result

lib/geocoder/results/mapquest.rb

@@ -45,7 +45,7 @@ module Geocoder::Result
     end
 
     def address
-      "#{street}, #{city}, #{state}, #{postal_code}, #{country}"
+      [street, city, state, postal_code, country].reject{|s| s.length == 0 }.join(", ")
     end
   end
 end