checkTemporaryPassword should call loadPasswords() first

Otherwise mNewpassword could be null.

Mlpearc reports on irc getting fatals about mNewpassword not
being an object. I couldn't reproduce, but loadPasswords() should
definitely be called here.

Change-Id: I6d1b74b79c87d1a1870971aafd1349255170123d
Merge "checkTemporaryPassword should call loadPasswords() first"