attribute_names will always return a list, so just use any?

actionpack/lib/action_controller/metal/params_wrapper.rb

@@ -180,7 +180,7 @@ def _default_wrap_model #:nodoc:
       def _set_wrapper_defaults(opts, model=nil)
         unless opts.include || opts.exclude
           model ||= _default_wrap_model
-          if model.respond_to?(:attribute_names) && model.attribute_names.present?
+          if model.respond_to?(:attribute_names) && model.attribute_names.any?
             opts.include = model.attribute_names
           end
         end