Revert unintential change to filter parameters

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4308 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/lib/action_controller/base.rb

@@ -373,26 +373,24 @@ def hide_action(*names)
       def filter_parameter_logging(*filter_words, &block)
         parameter_filter = Regexp.new(filter_words.collect{ |s| s.to_s }.join('|'), true) if filter_words.length > 0
 
-        class << self
-          define_method(:filter_parameters) do |unfiltered_parameters|
-            filtered_parameters = {}
-
-            unfiltered_parameters.each do |key, value|
-              if key =~ parameter_filter
-                filtered_parameters[key] = '[FILTERED]'
-              elsif value.is_a?(Hash)
-                filtered_parameters[key] = filter_parameters(value) 
-              elsif block_given?
-                key, value = key.dup, value.dup
-                yield key, value
-                filtered_parameters[key] = value
-              else 
-                filtered_parameters[key] = value
-              end
+        define_method(:filter_parameters) do |unfiltered_parameters|
+          filtered_parameters = {}
+
+          unfiltered_parameters.each do |key, value|
+            if key =~ parameter_filter
+              filtered_parameters[key] = '[FILTERED]'
+            elsif value.is_a?(Hash)
+              filtered_parameters[key] = filter_parameters(value) 
+            elsif block_given?
+              key, value = key.dup, value.dup
+              yield key, value
+              filtered_parameters[key] = value
+            else 
+              filtered_parameters[key] = value
             end
-
-            filtered_parameters
           end
+
+          filtered_parameters
         end
       end
     end