[jdk17u-dev] RFR: 8337066: Repeated call of StringBuffer.reverse with double byte string returns wrong result

[Goetz Lindenmaier]

I backport this for parity with 17.0.14-oracle

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Commit messages:
 - Backport cd61f97c2de94d19c0101c51bde143001078c89f

Changes: https://git.openjdk.org/jdk17u-dev/pull/3021/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=3021&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8337066
  Stats: 58 lines in 2 files changed: 58 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/3021.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/3021/head:pull/3021

PR: https://git.openjdk.org/jdk17u-dev/pull/3021