[evolution] Bug 753764 - Can't move recurring 24h calendar entries back one day

[Milan Crha <mcrha src gnome org>]

commit d6bf26109da66edb4c4d4fd88a9793d3646c8c68
Author: Milan Crha <mcrha redhat com>
Date:   Thu Aug 20 13:23:00 2015 +0200

    Bug 753764 - Can't move recurring 24h calendar entries back one day

 calendar/gui/e-cal-data-model.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)
---
diff --git a/calendar/gui/e-cal-data-model.c b/calendar/gui/e-cal-data-model.c
index c33a4eb..9618c1c 100644
--- a/calendar/gui/e-cal-data-model.c
+++ b/calendar/gui/e-cal-data-model.c
@@ -1028,10 +1028,18 @@ cal_data_model_instance_generated (ECalComponent *comp,
 
        tt = icalcomponent_get_dtstart (e_cal_component_get_icalcomponent (comp_copy));
        tt2 = icaltime_from_timet_with_zone (instance_start, tt.is_date, gid->zone);
+       if (tt.is_date || !tt.zone || tt.zone == icaltimezone_get_utc_timezone ())
+               tt2.zone = NULL;
+       else
+               tt2.zone = gid->zone;
        icalcomponent_set_dtstart (e_cal_component_get_icalcomponent (comp_copy), tt2);
 
        tt = icalcomponent_get_dtend (e_cal_component_get_icalcomponent (comp_copy));
        tt2 = icaltime_from_timet_with_zone (instance_end, tt.is_date, gid->zone);
+       if (tt.is_date || !tt.zone || tt.zone == icaltimezone_get_utc_timezone ())
+               tt2.zone = NULL;
+       else
+               tt2.zone = gid->zone;
        icalcomponent_set_dtend (e_cal_component_get_icalcomponent (comp_copy), tt2);
 
        e_cal_component_rescan (comp_copy);