[jdk16] Integrated: 8258484: AIX build fails in Harfbuzz with XLC 16.01.0000.0006

[Christoph Langer]

8258484: AIX build fails in Harfbuzz with XLC 16.01.0000.0006

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Commit messages:
 - Backport 3f9f86f0d3f918b9955ba6ba73c9c58ae8fcf7cb

Changes: https://git.openjdk.java.net/jdk16/pull/95/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk16&pr=95&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8258484
  Stats: 6 lines in 1 file changed: 5 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk16/pull/95.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/95/head:pull/95

PR: https://git.openjdk.java.net/jdk16/pull/95