[evolution-ews/gnome-2-28] Bug #668555 Crash in ews_cal_sync_items_ready_cb

[Punit Jain <jpunit src gnome org>]

commit 5e47fc16b7c360f2b152a4aefb089fa514ce76f8
Author: Punit Jain <jpunit novell com>
Date:   Tue Mar 27 12:39:05 2012 +0530

    Bug #668555 Crash in ews_cal_sync_items_ready_cb

 src/calendar/e-cal-backend-ews.c |   14 +++++++++-----
 1 files changed, 9 insertions(+), 5 deletions(-)
---
diff --git a/src/calendar/e-cal-backend-ews.c b/src/calendar/e-cal-backend-ews.c
index d167569..34dc0e4 100644
--- a/src/calendar/e-cal-backend-ews.c
+++ b/src/calendar/e-cal-backend-ews.c
@@ -3255,7 +3255,7 @@ ews_cal_get_items_ready_cb (GObject *obj, GAsyncResult *res, gpointer user_data)
 			const EwsId *item_id = e_ews_item_get_id (l->data);
 
 			sub_sync_data = g_new0 (struct _ews_sync_data, 1);
-			sub_sync_data->cbews = sync_data->cbews;
+			sub_sync_data->cbews = g_object_ref (sync_data->cbews);
 			sub_sync_data->master_uid = g_strdup (item_id->id);
 
 			e_ews_connection_get_items_start(g_object_ref(cnc), EWS_PRIORITY_MEDIUM,
@@ -3290,9 +3290,10 @@ ews_cal_get_items_ready_cb (GObject *obj, GAsyncResult *res, gpointer user_data)
 						 "IdOnly", NULL,
 						 EWS_MAX_FETCH_COUNT,
 						 ews_cal_sync_items_ready_cb,
-						 NULL, cbews);
+						 NULL, g_object_ref (cbews));
 
 exit:
+	g_object_unref (sync_data->cbews);
 	g_free (sync_data->master_uid);
 	g_free (sync_data->sync_state);
 	g_free (sync_data);
@@ -3348,6 +3349,7 @@ ews_cal_sync_items_ready_cb (GObject *obj, GAsyncResult *res, gpointer user_data
 		PRIV_LOCK (priv);
 		priv->refreshing = FALSE;
 		PRIV_UNLOCK (priv);
+		g_object_unref (cbews);
 		return;
 	}
 
@@ -3393,14 +3395,14 @@ ews_cal_sync_items_ready_cb (GObject *obj, GAsyncResult *res, gpointer user_data
 						 "IdOnly", NULL,
 						 EWS_MAX_FETCH_COUNT,
 						 ews_cal_sync_items_ready_cb,
-						 NULL, cbews);
+						 NULL, g_object_ref (cbews));
 		g_free (sync_state);
 		goto exit;
 	}
 
 	if (cal_item_ids || task_item_ids) {
 		sync_data = g_new0 (struct _ews_sync_data, 1);
-		sync_data->cbews = cbews;
+		sync_data->cbews = g_object_ref (cbews);
 		sync_data->sync_state = sync_state;
 		sync_data->sync_pending = !includes_last_item;
 	}
@@ -3444,6 +3446,8 @@ exit:
 		g_slist_free (items_updated);
 	if (items_deleted)
 		g_slist_free (items_deleted);
+
+	g_object_unref (cbews);
 }
 
 static gboolean
@@ -3467,7 +3471,7 @@ ews_start_sync	(gpointer data)
 						 "IdOnly", NULL,
 						 EWS_MAX_FETCH_COUNT,
 						 ews_cal_sync_items_ready_cb,
-						 NULL, cbews);
+						 NULL, g_object_ref (cbews));
 	return TRUE;
 }