[gtk+/portal] Avoid a strdup

[Matthias Clasen <matthiasc src gnome org>]

commit f9bb3296a88e6931b7ec55b0fbd26d97feccbb6a
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jul 6 21:05:24 2016 -0400

    Avoid a strdup
    
    We can use g_variant_new_take_string to avoid a strdup here.

 gtk/gtkpagesetup.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkpagesetup.c b/gtk/gtkpagesetup.c
index 22885ed..1c12adb 100644
--- a/gtk/gtkpagesetup.c
+++ b/gtk/gtkpagesetup.c
@@ -883,8 +883,7 @@ gtk_page_setup_to_gvariant (GtkPageSetup *setup)
 
   orientation = enum_to_string (GTK_TYPE_PAGE_ORIENTATION,
                                 gtk_page_setup_get_orientation (setup));
-  g_variant_builder_add (&builder, "{sv}", "Orientation", g_variant_new_string (orientation));
-  g_free (orientation);
+  g_variant_builder_add (&builder, "{sv}", "Orientation", g_variant_new_take_string (orientation));
 
   return g_variant_builder_end (&builder);
 }