memoizable.rb in activesupport-3.0.0.beta3

- old
+ new

@@ -1,5 +1,5 @@
-require 'active_support/core_ext/object/singleton_class'
+require 'active_support/core_ext/kernel/singleton_class'
 require 'active_support/core_ext/module/aliasing'
 
 module ActiveSupport
   module Memoizable
     def self.memoized_ivar_for(symbol)