LibJS: Convert Heap::allocate{,_without_realm}() to NonnullGCPtr

Author: https://github.com/linusg
Commit: 22089436ed
Pull-request: https://github.com/SerenityOS/serenity/pull/16498
Reviewed-by: https://github.com/trflynn89 ✅

Userland/Libraries/LibJS/Runtime/Realm.cpp

@@ -18,7 +18,7 @@ namespace JS {
 NonnullGCPtr<Realm> Realm::create(VM& vm)
 {
     // 1. Let realmRec be a new Realm Record.
-    auto* realm = vm.heap().allocate_without_realm<Realm>();
+    auto realm = vm.heap().allocate_without_realm<Realm>();
 
     // 2. Perform CreateIntrinsics(realmRec).
     Intrinsics::create(*realm);
@@ -28,7 +28,7 @@ NonnullGCPtr<Realm> Realm::create(VM& vm)
     // 5. Set realmRec.[[TemplateMap]] to a new empty List.
 
     // 6. Return realmRec.
-    return *realm;
+    return realm;
 }
 
 // 9.6 InitializeHostDefinedRealm ( ), https://tc39.es/ecma262/#sec-initializehostdefinedrealm