fix spec

fix spec

diff --git a/app/models/discourse_calendar/post_event.rb b/app/models/discourse_calendar/post_event.rb
index 420efdf..b5e72c2 100644
--- a/app/models/discourse_calendar/post_event.rb
+++ b/app/models/discourse_calendar/post_event.rb
@@ -147,7 +147,7 @@ module DiscourseCalendar
     end
 
     def is_expired?
-      Time.now > (self.ends_at || self.starts_at)
+      Time.now > (self.ends_at || self.starts_at || Time.now)
     end
 
     def display_invitees?(current_user)

GitHub sha: 13fd68f4