[gnome-tour] window: set the icon name

[Bilal Elmoussaoui <bilelmoussaoui src gnome org>]

commit 1f22285d0e51de71699300fc4ca89500f238a172
Author: Bilal Elmoussaoui <bil elmoussaoui gmail com>
Date:   Tue Jul 14 03:49:47 2020 +0200

    window: set the icon name

 src/widgets/window.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/widgets/window.rs b/src/widgets/window.rs
index c802304..5078744 100644
--- a/src/widgets/window.rs
+++ b/src/widgets/window.rs
@@ -5,7 +5,7 @@ use std::rc::Rc;
 
 use super::pages::{ImagePageWidget, WelcomePageWidget};
 use super::paginator::PaginatorWidget;
-use crate::config::PROFILE;
+use crate::config::{APP_ID, PROFILE};
 
 pub struct Window {
     pub widget: libhandy::ApplicationWindow,
@@ -35,6 +35,7 @@ impl Window {
 
     fn init(&mut self) {
         self.widget.set_default_size(920, 640);
+        self.widget.set_icon_name(Some(APP_ID));
 
         // Devel Profile
         if PROFILE == "Devel" {