RFR: 8334695: Fix build failure without zgc after JDK-8333300

[Doug Simon]

On Fri, 21 Jun 2024 02:13:49 GMT, Jie Fu <jiefu at openjdk.org> wrote:

> Hi all,
> 
> The patch fixes the build failure without zgc.
> Please review.
> 
> Thanks.
> Best regards,
> Jie

Marked as reviewed by dnsimon (Reviewer).

I assume `--with-jvm-features=-zgc` is never tested by mach5 or GitHub actions.

-------------

PR Review: https://git.openjdk.org/jdk/pull/19818#pullrequestreview-2131970020
PR Comment: https://git.openjdk.org/jdk/pull/19818#issuecomment-2182166748