[totem] main: Replace deprecated gtk_show_uri()

[Bastien Nocera <hadess src gnome org>]

commit 5b4a62bc17db7b5c0c570a89d8dbaf7c407c12eb
Author: Gabor Karsay <gabor karsay gmx at>
Date:   Sun Oct 6 23:20:51 2019 +0200

    main: Replace deprecated gtk_show_uri()
    
    gtk_show_uri_on_window() is the recommended call to be used as it passes information
    necessary for sandbox helpers to parent their dialogs properly.

 src/totem-object.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/totem-object.c b/src/totem-object.c
index 19d77f6ec..f6fa422a9 100644
--- a/src/totem-object.c
+++ b/src/totem-object.c
@@ -2216,7 +2216,7 @@ totem_object_show_help (TotemObject *totem)
 {
        GError *error = NULL;
 
-       if (gtk_show_uri (gtk_widget_get_screen (totem->win), "help:totem", gtk_get_current_event_time (), 
&error) == FALSE) {
+       if (gtk_show_uri_on_window (GTK_WINDOW (totem->win), "help:totem", gtk_get_current_event_time (), 
&error) == FALSE) {
                totem_object_show_error (totem, _("Totem could not display the help contents."), 
error->message);
                g_error_free (error);
        }