RFR: 8283202: Potential off-read when checking JFR's status in awaitFinished

[Erik Gahlin]

Hi,

Could I have a review of a fix that prevents the JFR parser to read passed the file state byte in the chunk header.

Testing: jdk/jdk/jfr

Thanks
Erik

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Commit messages:
 - Initial

Changes: https://git.openjdk.java.net/jdk/pull/7845/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7845&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8283202
  Stats: 19 lines in 1 file changed: 10 ins; 6 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7845.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7845/head:pull/7845

PR: https://git.openjdk.java.net/jdk/pull/7845