LibWeb: Make factory method of DOM::HTMLCollection fallible

Author: https://github.com/kennethmyhra
Commit: ff875d353b
Pull-request: https://github.com/SerenityOS/serenity/pull/17491
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibWeb/DOM/HTMLCollection.h

@@ -29,7 +29,7 @@ class HTMLCollection : public Bindings::LegacyPlatformObject {
     WEB_PLATFORM_OBJECT(HTMLCollection, Bindings::LegacyPlatformObject);
 
 public:
-    static JS::NonnullGCPtr<HTMLCollection> create(ParentNode& root, Function<bool(Element const&)> filter);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<HTMLCollection>> create(ParentNode& root, Function<bool(Element const&)> filter);
 
     virtual ~HTMLCollection() override;