[gtk+/portal] prepend instead of appending

[Matthias Clasen <matthiasc src gnome org>]

commit 9f05f44c7cbf7bc98698f1012dd13a9270ebc442
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Jul 6 20:16:32 2016 -0400

    prepend instead of appending
    
    It is cheaper.

 gtk/gtkfilechoosernative.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkfilechoosernative.c b/gtk/gtkfilechoosernative.c
index 266d025..a3e5636 100644
--- a/gtk/gtkfilechoosernative.c
+++ b/gtk/gtkfilechoosernative.c
@@ -356,7 +356,7 @@ gtk_file_chooser_native_add_choice (GtkFileChooser  *chooser,
   choice->options = g_strdupv ((char **)options);
   choice->option_labels = g_strdupv ((char **)option_labels);
 
-  self->choices = g_slist_append (self->choices, choice);
+  self->choices = g_slist_prepend (self->choices, choice);
 
   gtk_file_chooser_add_choice (GTK_FILE_CHOOSER (self->dialog),
                                id, label, options, option_labels);