Merge branch 'master' of github.com:defunkt/resque

Author: defunkt

lib/resque/worker.rb

@@ -35,7 +35,7 @@ def self.working
       names.map! { |name| "worker:#{name}" }
       redis.mapped_mget(*names).keys.map do |key|
         find key.sub("worker:", '')
-      end
+      end.compact
     end
 
     # Returns a single worker object. Accepts a string id.