Merge pull request rack#93 from gsamokovarov/dont-rescue-nil

Avoid rescue nil in the default throttled response

Author: ktheory

lib/rack/attack.rb

@@ -82,7 +82,7 @@ def clear!
   @notifier             = ActiveSupport::Notifications if defined?(ActiveSupport::Notifications)
   @blacklisted_response = lambda {|env| [403, {'Content-Type' => 'text/plain'}, ["Forbidden\n"]] }
   @throttled_response   = lambda {|env|
-    retry_after = env['rack.attack.match_data'][:period] rescue nil
+    retry_after = (env['rack.attack.match_data'] || {})[:period]
     [429, {'Content-Type' => 'text/plain', 'Retry-After' => retry_after.to_s}, ["Retry later\n"]]
   }