[epiphany] ephy-dialog: fix GtkBuilder leak

[Claudio Saavedra <csaavedra src gnome org>]

commit d27948fba0408d915cd4134403293c052e61524a
Author: Pavel Vasin <rat4vier gmail com>
Date:   Thu Sep 13 12:23:55 2012 +0400

    ephy-dialog: fix GtkBuilder leak
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683929

 lib/ephy-dialog.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/lib/ephy-dialog.c b/lib/ephy-dialog.c
index 32aba87..f170d01 100644
--- a/lib/ephy-dialog.c
+++ b/lib/ephy-dialog.c
@@ -393,6 +393,8 @@ ephy_dialog_dispose (GObject *object)
 		dialog->priv->dialog = NULL;
 	}
 
+	g_clear_object (&dialog->priv->builder);
+
 	parent_class->dispose (object);
 }