git: openjdk/jdk: jdk24: 8345465: Fix performance regression on x64 after JDK-8345120

[Per Minborg]

Changeset: 253030a6
Branch: jdk24
Author:    Per Minborg <pminborg at openjdk.org>
Date:      2024-12-10 14:22:42 +0000
URL:       https://git.openjdk.org/jdk/commit/253030a6d4e1d5d49622184cbff6ed809ab58206

8345465: Fix performance regression on x64 after JDK-8345120

Reviewed-by: jvernee
Backport-of: 06c44dd568d91e1bd68f60fd3e57abcbe97e5dca

! src/java.base/share/classes/jdk/internal/foreign/StringSupport.java
! test/micro/org/openjdk/bench/java/lang/foreign/InternalStrLen.java