Commented Issue: CredentialsDialog.cs this.UserName null [10118]

Not sure if bug or me doing something funny.

On if (this.ValidatePassword && !IsValidPassword(this.UserName.ToString(), password.ToString())) the UserName is null although it was entered. Whould it not be userName.ToString() passed into the function ?
Comments: ** Comment from web user: joyhere **

It seems to me, after some tests, that if the user name is changed in dialog prompt, it's the "userName" which gets changed, not the this.UserName, right?
Anyway, I think "userName.ToString()" should be correct here.