[gtk/wip/otte/for-master] filechooserwidget: Use gtk_drop_down_get_selected_item

[Matthias Clasen <matthiasc src gnome org>]

commit 62b214ffdfdf864fcc60e686689637d871eb89d6
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jun 21 01:20:05 2020 -0400

    filechooserwidget: Use gtk_drop_down_get_selected_item
    
    This showed up as a test failure when we get NULL as
    selected item and then try to unref it. Luckily
    get_selected_item is transfer none, so we don't have
    to worry about it.

 gtk/gtkfilechooserwidget.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)
---
diff --git a/gtk/gtkfilechooserwidget.c b/gtk/gtkfilechooserwidget.c
index 064846c955..94eb40c05d 100644
--- a/gtk/gtkfilechooserwidget.c
+++ b/gtk/gtkfilechooserwidget.c
@@ -6929,17 +6929,13 @@ filter_combo_changed (GtkDropDown          *dropdown,
                       GParamSpec           *pspec,
                       GtkFileChooserWidget *impl)
 {
-  gint new_index;
   GtkFileFilter *new_filter;
 
-  new_index = gtk_drop_down_get_selected (dropdown);
-  new_filter = g_list_model_get_item (G_LIST_MODEL (impl->filters), new_index);
-  set_current_filter (impl, new_filter);
+  new_filter = gtk_drop_down_get_selected_item (dropdown);
 
   if (impl->location_entry != NULL)
     _gtk_file_chooser_entry_set_file_filter (GTK_FILE_CHOOSER_ENTRY (impl->location_entry),
                                              new_filter);
-  g_object_unref (new_filter);
 }
 
 static gboolean