[gnome-panel] notification-area: fix tray icons drawing

[Alberts Muktupāvels <muktupavels src gnome org>]

commit b6edc41f231499ffe486dd67a79fe72a2fec3bbb
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Jan 19 16:16:32 2016 +0200

    notification-area: fix tray icons drawing

 applets/notification_area/na-tray.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/applets/notification_area/na-tray.c b/applets/notification_area/na-tray.c
index b7751b5..96e8f8a 100644
--- a/applets/notification_area/na-tray.c
+++ b/applets/notification_area/na-tray.c
@@ -533,11 +533,12 @@ na_tray_draw_icon (GtkWidget *widget,
     }
 }
 
-static void
+static gboolean
 na_tray_draw_box (GtkWidget *box,
                  cairo_t   *cr)
 {
   gtk_container_foreach (GTK_CONTAINER (box), na_tray_draw_icon, cr);
+  return TRUE;
 }
 
 static void