Rails4: replace deprecated Relation#first with finder options at NewsControllerTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12521 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/functional/news_controller_test.rb

@@ -144,7 +144,7 @@ class NewsControllerTest < ActionController::TestCase
           :attachments => {'1' => {'file' => uploaded_test_file('testfile.txt', 'text/plain')}}
       end
     end
-    attachment = Attachment.first(:order => 'id DESC')
+    attachment = Attachment.order('id DESC').first
     assert_equal News.find(1), attachment.container
   end