[jdk8u] RFR: 8287537: 8u JDK-8284620 backport broke AArch64 build

[Zhengyu Gu]

Please review this patch that fixes a bad backport.

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Commit messages:
 - 8287537: 8u JDK-8284620 backport broke AArch64 build

Changes: https://git.openjdk.java.net/jdk8u/pull/12/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk8u&pr=12&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8287537
  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk8u/pull/12.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk8u pull/12/head:pull/12

PR: https://git.openjdk.java.net/jdk8u/pull/12