[jdk17u] RFR: 8273924: ArrayIndexOutOfBoundsException thrown in java.util.JapaneseImperialCalendar.add()

[Yoshiki Sato]

8273924: ArrayIndexOutOfBoundsException thrown in java.util.JapaneseImperialCalendar.add()

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Commit messages:
 - 8273924: ArrayIndexOutOfBoundsException thrown in java.util.JapaneseImperialCalendar.add()

Changes: https://git.openjdk.java.net/jdk17u/pull/113/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk17u&pr=113&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8273924
  Stats: 26 lines in 3 files changed: 24 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk17u/pull/113.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17u pull/113/head:pull/113

PR: https://git.openjdk.java.net/jdk17u/pull/113