Fix typo (#33521).

git-svn-id: http://svn.redmine.org/redmine/trunk@21140 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/application_controller.rb

@@ -421,7 +421,7 @@ class ApplicationController < ActionController::Base
   end
 
   def replace_none_values_with_blank(params)
-    attributes = (params || {}))
+    attributes = (params || {})
     attributes.each_key {|k| attributes[k] = '' if attributes[k] == 'none'}
     if (custom = attributes[:custom_field_values])
       custom.each_key do |k|