[jdk11u-dev] RFR: 8278309: [windows] use of uninitialized OSThread::_state

[Thomas Stuefe]

May I please have reviews for this trivial downport. Did not apply cleanly because the surrounding comment confused the cherry picker, but the patch is really trivial.

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Commit messages:
- Backport 54993b13078ceb05736bb0e1d7ed7415c390442e

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/706/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=706&range=00
Issue: https://bugs.openjdk.java.net/browse/JDK-8278309
Stats: 4 lines in 1 file changed: 3 ins; 0 del; 1 mod
Patch: https://git.openjdk.java.net/jdk11u-dev/pull/706.diff
Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/706/head:pull/706

PR: https://git.openjdk.java.net/jdk11u-dev/pull/706