LibWeb: Add calls to JS_{DECLARE,DEFINE}_ALLOCATOR()

Author: https://github.com/mattco98
Commit: 31341b280a
Pull-request: https://github.com/SerenityOS/serenity/pull/23878
Issue: https://github.com/SerenityOS/serenity/issues/23805
Reviewed-by: https://github.com/awesomekling

Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp

@@ -62,6 +62,7 @@ void ReadableStreamBYOBReader::visit_edges(Cell::Visitor& visitor)
 
 class BYOBReaderReadIntoRequest : public ReadIntoRequest {
     JS_CELL(BYOBReaderReadIntoRequest, ReadIntoRequest);
+    JS_DECLARE_ALLOCATOR(BYOBReaderReadIntoRequest);
 
 public:
     BYOBReaderReadIntoRequest(JS::Realm& realm, WebIDL::Promise& promise)
@@ -103,6 +104,8 @@ private:
     JS::NonnullGCPtr<WebIDL::Promise> m_promise;
 };
 
+JS_DEFINE_ALLOCATOR(BYOBReaderReadIntoRequest);
+
 // https://streams.spec.whatwg.org/#byob-reader-read
 WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Promise>> ReadableStreamBYOBReader::read(JS::Handle<WebIDL::ArrayBufferView>& view)
 {