LibWeb: Make factory method of HTML::Window fallible

Author: https://github.com/kennethmyhra
Commit: 3e834636a6
Pull-request: https://github.com/SerenityOS/serenity/pull/17491
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibWeb/HTML/Window.h

@@ -37,7 +37,7 @@ class Window final
     WEB_PLATFORM_OBJECT(Window, DOM::EventTarget);
 
 public:
-    static JS::NonnullGCPtr<Window> create(JS::Realm&);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<Window>> create(JS::Realm&);
 
     ~Window();