Conflict exists when a user try to login and the email already exists for a different user.

[maricel0422]

Issue found on commit 9b7aba0

DESCRIPTION
If a mail address already exists for an not-network user, the following error is shown:

Notice: Undefined index: uid in /var/www/mayflower/wp-content/plugins/wordpress-cas-client/wordpress-cas-client.php on line 481

Notice: Undefined variable: user_pass in /var/www/mayflower/wp-includes/user.php on line 1299

Sorry, that email address is already used!

STEPS TO REPRO

1. Create a username in WP that is not on LDAP but uses an email address that is on LDAP.
2. Go to http://shoes.bellevuecollege.edu/mayflower/wp-admin
3. Enter LDAP username and password
4. Hit Enter

RESULT
Notice: Undefined index: uid in /var/www/mayflower/wp-content/plugins/wordpress-cas-client/wordpress-cas-client.php on line 481

Notice: Undefined variable: user_pass in /var/www/mayflower/wp-includes/user.php on line 1299

Sorry, that email address is already used!

EXPECTED
No error but access to wordpress

NOTES