Fixed that Active Record objects with float attribute could not be cloned #808

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1022 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/lib/active_record/base.rb

@@ -1048,7 +1048,7 @@ def attributes
         self.attribute_names.inject({}) do |attributes, name|
           begin
             attributes[name] = read_attribute(name).clone
-          rescue TypeError
+          rescue TypeError, NoMethodError
             attributes[name] = read_attribute(name)
           end
           attributes