RFR: 8371740 : LinkedTransferQueue.poll() returns null even though queue is not empty [v2]

[Viktor Klang]

> Adds the patch by @DougLea

Viktor Klang has updated the pull request incrementally with one additional commit since the last revision:

  Changes after code review

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Changes:
  - all: https://git.openjdk.org/jdk/pull/28479/files
  - new: https://git.openjdk.org/jdk/pull/28479/files/2b32c4fa..73c646ae

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28479&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28479&range=00-01

  Stats: 14 lines in 1 file changed: 9 ins; 2 del; 3 mod
  Patch: https://git.openjdk.org/jdk/pull/28479.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28479/head:pull/28479

PR: https://git.openjdk.org/jdk/pull/28479