From e1791ac8f54f61ca4afe6b2b04f947b841795815 Mon Sep 17 00:00:00 2001
From: Ludovic Marcotte <lmarcotte@inverse.ca>
Date: Mon, 14 Aug 2017 13:59:16 -0400
Subject: [PATCH] (fix) offset can be negative (fixes #4237)

---
 SoObjects/Appointments/SOGoAppointmentFolder.m | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/SoObjects/Appointments/SOGoAppointmentFolder.m b/SoObjects/Appointments/SOGoAppointmentFolder.m
index 78855cc49..ca4394dc4 100644
--- a/SoObjects/Appointments/SOGoAppointmentFolder.m
+++ b/SoObjects/Appointments/SOGoAppointmentFolder.m
@@ -1241,7 +1241,8 @@ firstInstanceCalendarDateRange: (NGCalendarDateRange *) fir
   iCalDateTime *dtstart;
   iCalRepeatableEntityObject *component;
   iCalTimeZone *eventTimeZone;
-  unsigned count, max, offset;
+  unsigned count, max;
+  int offset;
   id tz;
 
   content = [theRecord objectForKey: @"c_cycleinfo"];