Reset current user to prevent random test failures.

git-svn-id: http://svn.redmine.org/redmine/trunk@14645 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/lib/redmine/i18n_test.rb

@@ -22,7 +22,7 @@ class Redmine::I18nTest < ActiveSupport::TestCase
   include ActionView::Helpers::NumberHelper
 
   def setup
-    User.current.language = nil
+    User.current = nil
   end
 
   def teardown