RFR: 8260632: Build failures after JDK-8253353

[Andrew John Hughes]

Necessary backport to fix the build now JDK-8253353 has been backported to 8u in 8u332-b01

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Commit messages:
 - Backport f1522fb288f292edf80bbc87436dc932bd7d2d9d

Changes: https://git.openjdk.org/shenandoah-jdk8u/pull/6/files
 Webrev: https://webrevs.openjdk.org/?repo=shenandoah-jdk8u&pr=6&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8260632
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/shenandoah-jdk8u/pull/6.diff
  Fetch: git fetch https://git.openjdk.org/shenandoah-jdk8u pull/6/head:pull/6

PR: https://git.openjdk.org/shenandoah-jdk8u/pull/6