Jakob Unterwurzacher adf7d75d31 main: changePassword: zero masterkey
Overwrite the masterkey with zeros once we
have encrypted it, and let it run out of scope.

Also get rid of the password duplicate in
readpassword.Twice.
2018-02-18 15:36:14 +01:00
..
2018-02-18 15:36:14 +01:00