[rhythmbox/wip/headerbar] Use symbolic icon for volume widget

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 15baf7cc1f450cf44722c78d1bf9c23412c4f4dc
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Tue Apr 16 14:57:21 2013 +0200

    Use symbolic icon for volume widget

 widgets/rb-header.c | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/widgets/rb-header.c b/widgets/rb-header.c
index c57b704..0ba732f 100644
--- a/widgets/rb-header.c
+++ b/widgets/rb-header.c
@@ -383,6 +383,9 @@ rb_header_constructed (GObject *object)
 
        /* volume button */
        header->priv->volume_button = gtk_volume_button_new ();
+       g_object_set (G_OBJECT (header->priv->volume_button),
+                     "use-symbolic", TRUE,
+                     NULL);
        g_signal_connect (header->priv->volume_button, "value-changed",
                          G_CALLBACK (volume_widget_changed_cb),
                          header);