[gtk+] actionbar: Notify when :revealed changes

[Timm Bäder <baedert src gnome org>]

commit e08918cce0cd2f31924c4960af5194361b0f69dd
Author: Timm Bäder <mail baedert org>
Date:   Thu Jan 12 15:14:25 2017 +0100

    actionbar: Notify when :revealed changes

 gtk/gtkactionbar.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkactionbar.c b/gtk/gtkactionbar.c
index a8414f7..e87a0c3 100644
--- a/gtk/gtkactionbar.c
+++ b/gtk/gtkactionbar.c
@@ -511,7 +511,11 @@ gtk_action_bar_set_revealed (GtkActionBar *action_bar,
   g_return_if_fail (GTK_IS_ACTION_BAR (action_bar));
 
   revealed = !!revealed;
-  gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), revealed);
+  if (revealed != gtk_revealer_get_reveal_child (GTK_REVEALER (priv->revealer)))
+    {
+      gtk_revealer_set_reveal_child (GTK_REVEALER (priv->revealer), revealed);
+      g_object_notify_by_pspec (G_OBJECT (action_bar), props[PROP_REVEALED]);
+    }
 }
 
 /**