Reset #roles on reload (#23519).

git-svn-id: http://svn.redmine.org/redmine/trunk@16154 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/user.rb

@@ -162,6 +162,7 @@ class User < Principal
   alias :base_reload :reload
   def reload(*args)
     @name = nil
+    @roles = nil
     @projects_by_role = nil
     @project_ids_by_role = nil
     @membership_by_project_id = nil