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/Script.cpp

@@ -24,7 +24,7 @@ Result<NonnullGCPtr<Script>, Vector<ParserError>> Script::parse(StringView sourc
         return parser.errors();
 
     // 3. Return Script Record { [[Realm]]: realm, [[ECMAScriptCode]]: script, [[HostDefined]]: hostDefined }.
-    return NonnullGCPtr(*realm.heap().allocate_without_realm<Script>(realm, filename, move(script), host_defined));
+    return realm.heap().allocate_without_realm<Script>(realm, filename, move(script), host_defined);
 }
 
 Script::Script(Realm& realm, StringView filename, NonnullRefPtr<Program> parse_node, HostDefined* host_defined)