Ruby 1.9 compat: workaround module_eval issue

actionpack/lib/action_controller/components.rb

@@ -39,12 +39,7 @@ def self.included(base) #:nodoc:
       base.class_eval do
         include InstanceMethods
         extend ClassMethods
-
-        helper do
-          def render_component(options)
-            @controller.send!(:render_component_as_string, options)
-          end
-        end
+        helper HelperMethods
 
         # If this controller was instantiated to process a component request,
         # +parent_controller+ points to the instantiator of this controller.
@@ -67,6 +62,12 @@ def process_with_components(request, response, parent_controller = nil) #:nodoc:
       end
     end
 
+    module HelperMethods
+      def render_component(options)
+        @controller.send!(:render_component_as_string, options)
+      end
+    end
+
     module InstanceMethods
       # Extracts the action_name from the request parameters and performs that action.
       def process_with_components(request, response, method = :perform_action, *arguments) #:nodoc: