[xdg-desktop-portal-gnome/gnome-42] appchooser: Don't use the AppDialogHandle after it has been freed

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 54de4de40447dc104699b9d5a4e11b4319a94beb
Author: Debarshi Ray <debarshir gnome org>
Date:   Sat Jul 2 16:02:35 2022 +0200

    appchooser: Don't use the AppDialogHandle after it has been freed
    
    https://gitlab.gnome.org/GNOME/xdg-desktop-portal-gnome/-/merge_requests/46

 src/appchooser.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)
---
diff --git a/src/appchooser.c b/src/appchooser.c
index 08f6b87..8ded6ec 100644
--- a/src/appchooser.c
+++ b/src/appchooser.c
@@ -125,16 +125,15 @@ handle_close (XdpImplRequest *object,
 {
   GVariantBuilder opt_builder;
 
+  if (handle->request->exported)
+    request_unexport (handle->request);
+
   g_variant_builder_init (&opt_builder, G_VARIANT_TYPE_VARDICT);
   xdp_impl_app_chooser_complete_choose_application (handle->impl,
                                                     handle->invocation,
                                                     2,
                                                     g_variant_builder_end (&opt_builder));
   app_dialog_handle_close (handle);
-
-  if (handle->request->exported)
-    request_unexport (handle->request);
-
   xdp_impl_request_complete_close (object, invocation);
 
   return TRUE;