Comment 4 for bug 1190610

In the branch for bug #1160778 I see that xtrabackup_galera_info is encrypted:

86 + write_to_backup_file("$galera_info", "$con->{status}->{wsrep_local_state_uuid}->{Value}" .
87 + ":" . "$con->{status}->{wsrep_last_committed}->{Value}" . "\n");

(unless there's a bug in write_to_backup_file, I didn't do a full review yet).