print portal: don't leak window handles

Pointed out by Christian Persch.

Closes https://gitlab.gnome.org/GNOME/gtk/issues/1274

diff --git a/gtk/gtkprintoperation-portal.c b/gtk/gtkprintoperation-portal.c
index a6683fd212ae4f477694777e4ed6feb0ada39e9c..ded550262b6ef0fb881a9c813718c8b0ea79051f 100644 (file)
--- a/gtk/gtkprintoperation-portal.c
+++ b/gtk/gtkprintoperation-portal.c
@@ -62,6 +62,8 @@ portal_data_free (gpointer data)
 {
   PortalData *portal = data;
 
+  if (portal->parent)
+    gtk_window_unexport_handle (portal->parent);
   g_object_unref (portal->op);
   g_object_unref (portal->proxy);
   if (portal->loop)