[gimp] app: fix marking file dialogs as transient if opened from context menu

[Nils Philippsen <nphilipp src gnome org>]

commit 1a4087bd5f1c79859fbfc417eff58f8e7783f335
Author: Nils Philippsen <nils redhat com>
Date:   Wed Nov 14 16:42:05 2012 +0100

    app: fix marking file dialogs as transient if opened from context menu
    
    GimpDisplayShell isn't a GtkWindow (anymore), therefore use
    gtk_widget_get_toplevel() to find the actual toplevel window.

 app/actions/file-commands.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/app/actions/file-commands.c b/app/actions/file-commands.c
index cbf82de..fb7a86e 100644
--- a/app/actions/file-commands.c
+++ b/app/actions/file-commands.c
@@ -555,7 +555,7 @@ file_save_dialog_show (Gimp        *gimp,
       if (dialog)
         {
           gtk_window_set_transient_for (GTK_WINDOW (dialog),
-                                        GTK_WINDOW (parent));
+                                        GTK_WINDOW (gtk_widget_get_toplevel (parent)));
 
           g_object_set_data_full (G_OBJECT (image),
                                   "gimp-file-save-dialog", dialog,
@@ -606,7 +606,7 @@ file_export_dialog_show (Gimp      *gimp,
       if (dialog)
         {
           gtk_window_set_transient_for (GTK_WINDOW (dialog),
-                                        GTK_WINDOW (parent));
+                                        GTK_WINDOW (gtk_widget_get_toplevel (parent)));
 
           g_object_set_data_full (G_OBJECT (image),
                                   "gimp-file-export-dialog", dialog,