Make the store less verbose when saving the session data

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@529 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/session/active_record_store.rb

@@ -56,7 +56,7 @@ def restore
       # Save session state in the session's ActiveRecord object.
       def update
         return unless @session
-        @session.update_attribute "data", @data
+        ActiveRecord::Base.benchmark("Saving session") { @session.update_attribute "data", @data }
       end
     end #ActiveRecordStore
   end #Session