RFR: 8294316: SA core file support is broken on macosx-x64 starting with macOS 12.x

[Tom Rodriguez]

This is a minor fix to core file reading on macos x.  I can confirm that after this fix I can run the problem listed SA core file tests on Ventura.

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Commit messages:
 - 8294316: SA core file support is broken on macosx-x64 starting with macOS 12.x

Changes: https://git.openjdk.org/jdk/pull/14569/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14569&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8294316
  Stats: 20 lines in 2 files changed: 7 ins; 3 del; 10 mod
  Patch: https://git.openjdk.org/jdk/pull/14569.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14569/head:pull/14569

PR: https://git.openjdk.org/jdk/pull/14569