[gtk] filechooserbutton: Only destroy existing native dialogs

[Timm Bäder <baedert src gnome org>]

commit 49887d4c8196e2fe1b69aa8e62697aa953d59df2
Author: Timm Bäder <mail baedert org>
Date:   Thu Oct 3 10:17:56 2019 +0200

    filechooserbutton: Only destroy existing native dialogs

 gtk/gtkfilechooserbutton.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/gtk/gtkfilechooserbutton.c b/gtk/gtkfilechooserbutton.c
index f60222aa69..dd26efa2cb 100644
--- a/gtk/gtkfilechooserbutton.c
+++ b/gtk/gtkfilechooserbutton.c
@@ -1235,7 +1235,7 @@ gtk_file_chooser_button_hide (GtkWidget *widget)
 
   if (priv->dialog)
     gtk_widget_hide (priv->dialog);
-  else
+  else if (priv->native)
     gtk_native_dialog_hide (GTK_NATIVE_DIALOG (priv->native));
 
   if (GTK_WIDGET_CLASS (gtk_file_chooser_button_parent_class)->hide)