[simple-scan/gnome-3-34] Don't use URI for changing extension.

[Robert Ancell <rancell src gnome org>]

commit 9963a7cca054a50be3d91dfd412fa03720b9b700
Author: Bartosz Kosiorek <gang65 poczta onet pl>
Date:   Tue Apr 14 23:24:19 2020 +0200

    Don't use URI for changing extension.
    
    Fixes: #165

 src/app-window.vala | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
---
diff --git a/src/app-window.vala b/src/app-window.vala
index 561c232..3ec49be 100644
--- a/src/app-window.vala
+++ b/src/app-window.vala
@@ -399,8 +399,7 @@ public class AppWindow : Gtk.ApplicationWindow
             if (file_type_combo.get_active_iter (out i))
                 file_type_store.get (i, 1, out extension, -1);
 
-            var uri = save_dialog.get_uri ();
-            var filename = Path.get_basename (uri);
+            var filename = save_dialog.get_current_name ();
 
             /* Replace extension */
             var extension_index = filename.last_index_of_char ('.');