[jdk15u-dev] RFR: 8257242: [macOS] Java app crashes while switching input methods

[Olga Mikhaltsova]

I'd like to backport JDK-8257242 to jdk15u for parity with jdk11u.
The original patch applied cleanly.

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Commit messages:
 - Backport 822ee47459d3a33ab3acd7f8798525967a20d237

Changes: https://git.openjdk.java.net/jdk15u-dev/pull/32/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk15u-dev&pr=32&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8257242
  Stats: 8 lines in 2 files changed: 3 ins; 3 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk15u-dev/pull/32.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk15u-dev pull/32/head:pull/32

PR: https://git.openjdk.java.net/jdk15u-dev/pull/32