[gnome-tour/bilelmoussaoui/video] use clone! correctly if feature=video

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit db97321447fb6db4644352949e3cd63db2e8b460
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Tue Aug 18 17:07:52 2020 +0200

    use clone! correctly if feature=video

 src/widgets/pages/welcome.rs | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/widgets/pages/welcome.rs b/src/widgets/pages/welcome.rs
index 3b01029..8c40d0a 100644
--- a/src/widgets/pages/welcome.rs
+++ b/src/widgets/pages/welcome.rs
@@ -4,6 +4,8 @@ use gettextrs::gettext;
 #[cfg(feature = "video")]
 use gio::FileExt;
 #[cfg(feature = "video")]
+use glib::clone;
+#[cfg(feature = "video")]
 use glib::{Receiver, Sender};
 use gtk::prelude::*;
 #[cfg(feature = "video")]