$NetBSD: patch-ca,v 1.5 2019/11/26 19:13:25 nia Exp $

--- src/plugins/vcalendar/vcal_folder.c.orig	2019-01-27 15:57:37.000000000 +0000
+++ src/plugins/vcalendar/vcal_folder.c
@@ -778,7 +778,7 @@ GSList *vcal_get_events_list(FolderItem 
         			struct icaltimetype dtstart;
         			struct icaltimetype next;
         			icalrecur_iterator* ritr;
-				time_t duration = (time_t) NULL;
+				time_t duration = (time_t) 0;
 				struct icaldurationtype ical_dur;
 				int i = 0;
 
