[gnome-builder] Meson-templates: fix Vala template

[Christian Hergert <chergert src gnome org>]

commit 96349327f909e82bba3d9d299827cfd37b80e370
Author: Lorenz Wildberg <lorenz wild-fisch de>
Date:   Tue Mar 15 18:15:21 2022 +0000

    Meson-templates: fix Vala template

 src/plugins/meson-templates/resources/src/application-gtk4.vala | 2 ++
 1 file changed, 2 insertions(+)
---
diff --git a/src/plugins/meson-templates/resources/src/application-gtk4.vala 
b/src/plugins/meson-templates/resources/src/application-gtk4.vala
index c626d7208..03415657b 100644
--- a/src/plugins/meson-templates/resources/src/application-gtk4.vala
+++ b/src/plugins/meson-templates/resources/src/application-gtk4.vala
@@ -4,7 +4,9 @@ namespace {{PreFix}} {
     public class Application : {{if is_adwaita}}Adw{{else}}Gtk{{end}}.Application {
         public Application () {
             Object (application_id: "{{appid}}", flags: ApplicationFlags.FLAGS_NONE);
+        }
 
+        construct {
             ActionEntry[] action_entries = {
                 { "about", this.on_about_action },
                 { "preferences", this.on_preferences_action },