[jfx11u] Integrated: 8296654: [macos] Crash when launching JavaFX app with JDK that targets SDK 13

[Kevin Rushforth]

Clean backport to jfx11u.

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Commit messages:
 - 8296654: [macos] Crash when launching JavaFX app with JDK that targets SDK 13

Changes: https://git.openjdk.org/jfx11u/pull/128/files
 Webrev: https://webrevs.openjdk.org/?repo=jfx11u&pr=128&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8296654
  Stats: 9 lines in 1 file changed: 6 ins; 0 del; 3 mod
  Patch: https://git.openjdk.org/jfx11u/pull/128.diff
  Fetch: git fetch https://git.openjdk.org/jfx11u pull/128/head:pull/128

PR: https://git.openjdk.org/jfx11u/pull/128