[gnome-calendar] window: remove refresh timeout on exit

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit e07590d1cf0386c3c2fc7f6c9c673069b0c3fe4b
Author: Milan Crha <mcrha redhat com>
Date:   Mon Jun 5 12:50:00 2017 -0300

    window: remove refresh timeout on exit
    
    https://bugzilla.gnome.org/show_bug.cgi?id=783441

 src/gcal-window.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/src/gcal-window.c b/src/gcal-window.c
index d9880a4..adf8594 100644
--- a/src/gcal-window.c
+++ b/src/gcal-window.c
@@ -1295,6 +1295,12 @@ gcal_window_finalize (GObject *object)
       window->open_edit_dialog_timeout_id = 0;
     }
 
+  if (window->refresh_timeout_id > 0)
+    {
+      g_source_remove (window->refresh_timeout_id);
+      window->refresh_timeout_id = 0;
+    }
+
   /* If we have a queued event to delete, remove it now */
   if (window->event_to_delete)
     {