ServiceStack/ServiceStack.Contrib — pull request #25 by resurge (2013-08-07 10:03:12+00:00)
Title: Made password optional when calling UpdateUserAuth.

Updating a UserAuth without having the raw password is not possible.

Made the password parameter optional in the `UpdateUserAuth` method.

I also believe that this was your original intention that this should be possible seeing the null checks happening on the password variable within `UpdateUserAuth`. These are useless in the current implementation because an exception will be thrown on the assert in `ValidateNewUser` and the code will never reach the null checks anyway.