remove trailing white spaces from app/models/principal.rb

git-svn-id: http://svn.redmine.org/redmine/trunk@14322 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/principal.rb

@@ -50,7 +50,7 @@ class Principal < ActiveRecord::Base
       else
         view_all_active = user.builtin_role.users_visibility == 'all'
       end
-  
+
       if view_all_active
         active
       else