Fixed bug in Event.get_status() about expire.

dav_events/models.py

@@ -262,8 +262,9 @@ class Event(models.Model):
         elif self.last_day:
             if self.last_day < now:
                 return 'expired'
-        elif self.alt_first_day and self.alt_first_day < now:
-            return 'expired'
+        elif self.alt_first_day:
+            if self.alt_first_day < now:
+                return 'expired'
         elif self.first_day and self.first_day < now:
             return 'expired'