Description of problem:
evolution-alarm-notify crashes when you move an appointment back to a
time where it should have already fired its reminder.

Version-Release number of selected component (if applicable):
1.4.5-7

How reproducible:
Always

Steps to Reproduce:
1. Add an appointment (with a reminder) for some time in the future.
2. Move the appointment back (either by dragging or by editing the
date, doesn't matter which) to a point where the reminder should have
fired.  e.g., move it back to some time yesterday.
3. evolution-alarm-notify crashes.
  
Actual results:
evolution-alarm-notify crashes, and Evolution must be restarted if you
want your appointment reminders to work.

Expected results:
No crash.. it should just accept it and be silent, or probably even
better would be to fire the reminder immediately or after a few
seconds' wait (in case you moved it accidentally, or need to move it
again).

Additional info:
Thanks.