filerchooser: Show Recent files in inverse order

When looking at Recent files in the file chooser, it makes more
sense to show the recent files on top.

This commit flips the sort order for that case.

gtk/gtkfilechooserwidget.c

@@ -7110,6 +7110,10 @@ recent_sort_func (gconstpointer a,
 
   result = time_sort_func (a, b, user_data);
 
+  /* Recent files should show most recently changed items first
+   */
+  result = -result;
+
   if (result == GTK_ORDERING_EQUAL)
     result = name_sort_func (a, b, user_data);