[evolution-data-server] Fix a memory leak in e_cal_recur_generate_instances_sync()

[Milan Crha <mcrha src gnome org>]

commit bdcaa2ba43a5a1d6c60c45d9848fc54959ec46a3
Author: Milan Crha <mcrha redhat com>
Date:   Fri Jun 28 09:26:17 2019 +0200

    Fix a memory leak in e_cal_recur_generate_instances_sync()

 src/calendar/libecal/e-cal-recur.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/calendar/libecal/e-cal-recur.c b/src/calendar/libecal/e-cal-recur.c
index 3114f3e7b..a36fd1228 100644
--- a/src/calendar/libecal/e-cal-recur.c
+++ b/src/calendar/libecal/e-cal-recur.c
@@ -700,7 +700,7 @@ e_cal_recur_generate_instances_sync (ICalComponent *icalcomp,
 
                for (prop = i_cal_component_get_first_property (icalcomp, I_CAL_EXDATE_PROPERTY);
                     prop && success;
-                    prop = i_cal_component_get_next_property (icalcomp, I_CAL_EXDATE_PROPERTY)) {
+                    g_object_unref (prop), prop = i_cal_component_get_next_property (icalcomp, 
I_CAL_EXDATE_PROPERTY)) {
                        ICalTime *exdate = i_cal_property_get_exdate (prop);
 
                        if (exdate || i_cal_time_is_null_time (exdate)) {