src: reuse std::make_unique

Ref: https://github.com/nodejs/node/commit/283a967e356311a467113eea450a81827d43c969

PR-URL: https://github.com/nodejs/node/pull/24132
Refs: https://github.com/nodejs/node/commit/283a967e356311a467113eea450a81827d43c969


Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Eugene Ostroukhov <eostroukhov@google.com>