Mail::Box not check expires date for dotlock

Hi All
I found some bug in Mail::Box in init sub
where Locker is created

see original code:
    $self->{MB_locker}
      = $args->{locker}
      || Mail::Box::Locker->new
          ( folder   => $self
          , method   => $args->{lock_type}
          , timeout  => $args->{lock_timeout}
          , wait     => $args->{lock_wait}
          , file     => ($args->{lockfile} || $args->{lock_file})
          );

but wait not used in locker.
In changelog (version 2.013) I found some description about this:
        - Mail::Box::Locker::new "timeout" and "wait" options where too
          confusing to be implemented correctly.  So they didn't work
          as described.  Now, they are called "expire" and "timeout".
          Thanks to [John B Batzel] for pointing-out the problems.

but in source code this not implementation
maby need change wait to expire

PS: English is bad :)