Interactive password fails if the passphrase is too long

Hi,

There apparently is a bug which cause authentification to fail if the user's password is too long. If you want to test, create a database and a user with a 128 characters long password (I used pwgen 128 1).

Try to connect with those credentials with :
mariadb -h 127.0.0.1 -u <user> -p<password> <database>
and it should work. But if you try the interactive version :
mariadb -h 127.0.0.1 -u <user> -p <database>
the login will fail with the error
ERROR 1045 (28000): Access denied

I've create a bug in the debian tracker if you want to see the tests :
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1001385

Thanks