RFR: 8262329: Fix JFR parser exception messages [v2]

[Roman Kennke]

On Thu, 25 Feb 2021 15:07:59 GMT, Erik Gahlin <egahlin at openjdk.org> wrote:

> I'm not sure why there is a check for chunk header? I think the check can be removed, including the static field.

I am not sure either. From what I can glean from the log message, the intention is to print some information when a constant pool is never used, except for the ChunkHeader.

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PR: https://git.openjdk.java.net/jdk/pull/2714