"Forgot Password/Username" form doesn't validate the inputed variable

Summary of The Bug

Crowd "Forgot Password" and "Forgot Username" form does not checked the validity of the user name. When user enter the wrong username/e-mail which is not existed on the database, the expected message are "Sorry, username/e-mail is not exist on the system", however Crowd throw the same message as existed username.

Username message

Password message

Crowd log (atlassian-crowd.log) recognize that the user is not exist means that Crowd do check if the user existed or not.

2011-05-16 15:14:26,255 http-8095-2 INFO [crowd.manager.login.ForgottenLoginManagerImpl] No usernames found for email address: nothing

Steps to reproduce

1. Access Crowd console
2. Click the "Can't access your account" button
3. Choose either option
4. Enter a non-existing username/e-mail