LibJS: Convert AsyncFromSyncIterator::create() to NonnullGCPtr

Userland/Libraries/LibJS/Runtime/AsyncFromSyncIterator.cpp

@@ -11,9 +11,9 @@
 
 namespace JS {
 
-AsyncFromSyncIterator* AsyncFromSyncIterator::create(Realm& realm, Iterator sync_iterator_record)
+NonnullGCPtr<AsyncFromSyncIterator> AsyncFromSyncIterator::create(Realm& realm, Iterator sync_iterator_record)
 {
-    return realm.heap().allocate<AsyncFromSyncIterator>(realm, realm, sync_iterator_record);
+    return *realm.heap().allocate<AsyncFromSyncIterator>(realm, realm, sync_iterator_record);
 }
 
 AsyncFromSyncIterator::AsyncFromSyncIterator(Realm& realm, Iterator sync_iterator_record)

Userland/Libraries/LibJS/Runtime/AsyncFromSyncIterator.h

@@ -17,7 +17,7 @@ class AsyncFromSyncIterator final : public Object {
     JS_OBJECT(AsyncFromSyncIterator, Object);
 
 public:
-    static AsyncFromSyncIterator* create(Realm&, Iterator sync_iterator_record);
+    static NonnullGCPtr<AsyncFromSyncIterator> create(Realm&, Iterator sync_iterator_record);
 
     virtual void initialize(Realm&) override;
     virtual ~AsyncFromSyncIterator() override = default;

Userland/Libraries/LibJS/Runtime/AsyncFromSyncIteratorPrototype.cpp

@@ -202,7 +202,7 @@ Iterator create_async_from_sync_iterator(VM& vm, Iterator sync_iterator_record)
 
     // 1. Let asyncIterator be OrdinaryObjectCreate(%AsyncFromSyncIteratorPrototype%, « [[SyncIteratorRecord]] »).
     // 2. Set asyncIterator.[[SyncIteratorRecord]] to syncIteratorRecord.
-    auto* async_iterator = AsyncFromSyncIterator::create(realm, sync_iterator_record);
+    auto async_iterator = AsyncFromSyncIterator::create(realm, sync_iterator_record);
 
     // 3. Let nextMethod be ! Get(asyncIterator, "next").
     auto next_method = MUST(async_iterator->get(vm.names.next));