[evolution-exchange] Bug #679613 - Invalid free in e_exchange_calendar_pcalendar_on_change()

[Milan Crha <mcrha src gnome org>]

commit 63dc31398eee2eb3759ba277c6d515c50ce8efe3
Author: Milan Crha <mcrha redhat com>
Date:   Mon Jul 9 11:09:32 2012 +0200

    Bug #679613 - Invalid free in e_exchange_calendar_pcalendar_on_change()

 eplugin/exchange-calendar.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/eplugin/exchange-calendar.c b/eplugin/exchange-calendar.c
index 7eebaa7..675d795 100644
--- a/eplugin/exchange-calendar.c
+++ b/eplugin/exchange-calendar.c
@@ -134,7 +134,9 @@ e_exchange_calendar_pcalendar_on_change (GtkTreeView *treeview,
 		return;
 
 	selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (treeview));
-	gtk_tree_selection_get_selected (selection, &model, &iter);
+	if (!selection ||
+	    !gtk_tree_selection_get_selected (selection, &model, &iter))
+		return;
 
 	gtk_tree_model_get (model, &iter, CALENDARRURI_COL, &ruri, -1);
 	es_ruri = g_strconcat (account->account_filename, "/;", ruri, NULL);