Use head instead of render :nothing => true.

git-svn-id: http://svn.redmine.org/redmine/trunk@15671 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/watchers_controller.rb

@@ -59,7 +59,7 @@ class WatchersController < ApplicationController
       @users = User.active.visible.where(:id => user_ids).to_a
     end
     if @users.blank?
-      render :nothing => true
+      head 200
     end
   end