git: openjdk/jdk-sandbox: json: small refinement

[duke]

Changeset: 648c3a33
Branch: json
Author:    Naoto Sato <naoto.sato at oracle.com>
Date:      2026-01-07 15:32:32 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/648c3a33be627f4153d3b541f7318dad4c40680e

small refinement

! src/java.base/share/classes/java/util/json/JsonValue.java