add empty line after guard clause to WatchersController

git-svn-id: http://svn.redmine.org/redmine/trunk@20225 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/controllers/watchers_controller.rb

@@ -155,6 +155,7 @@ class WatchersController < ApplicationController
         !w.project.visible?
       end
     end
+
     objects
   end
 end