[gnome-boxes] welcome-tutorial, main: Ensure type of WelcomeTutorialPage

[Felipe Borges <felipeborges src gnome org>]

commit 476633bea47edbbf08725b6bccc781475de42e53
Author: Felipe Borges <felipeborges gnome org>
Date:   Tue Nov 30 17:30:54 2021 +0100

    welcome-tutorial, main: Ensure type of WelcomeTutorialPage

 src/main.vala | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/src/main.vala b/src/main.vala
index 4282496e..ae41dcea 100644
--- a/src/main.vala
+++ b/src/main.vala
@@ -72,6 +72,7 @@ public int main (string[] args) {
     GLib.Environment.set_application_name (_("Boxes"));
 
     typeof (Boxes.WelcomeTutorial).ensure ();
+    typeof (Boxes.WelcomeTutorialPage).ensure ();
 
     parse_local_args (ref args);