git: openjdk/jdk: 8315789: Minor HexFormat performance improvements

[Claes Redestad]

Changeset: 92ad4a23
Author:    Claes Redestad <redestad at openjdk.org>
Date:      2023-09-13 20:58:23 +0000
URL:       https://git.openjdk.org/jdk/commit/92ad4a2399bb06b36b167a60c00d2299917fca9f

8315789: Minor HexFormat performance improvements

Reviewed-by: rriggs

! src/java.base/share/classes/java/util/HexFormat.java
+ test/micro/org/openjdk/bench/java/util/HexFormatBench.java