mozilla/browserid — pull request #1696 by shane-tomlinson (2012-06-06 13:30:13+00:00)
Title: Clear the password if the user types a password then changes the email address.

Steps to check:

1) Open the BrowserID dialog. If signed in, click "This is not me"
2) Enter a known secondary email address into the email field.
3) Begin typing a password.
4) Erase a character in the email address. Finish the email address again and hit "enter"
5) Password field should be cleared.

issue #1540