Integrated: 8268331: Fix crash in humongous object eager reclaim logging

[Thomas Schatzl]

Hi all,

  can I have reviews for this change that fixes the crashes after JDK-8267924 has been integrated?

The problem has been move of one logging statement, which caused an NPE for that test.

Since the backout that I originally planned to put out has not been pushed yet (https://github.com/openjdk/jdk/pull/4391), I would like to push this asap instead.

Otherwise I'll just do a regular redo-push.

Testing: local runs of failing test

Thanks,
  Thomas

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Commit messages:
 - Fix null pointer access
 - Revert "Revert "8267924: Misleading G1 eager reclaim detail logging""
 - Revert "8267924: Misleading G1 eager reclaim detail logging"

Changes: https://git.openjdk.java.net/jdk/pull/4393/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4393&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8268331
  Stats: 11 lines in 1 file changed: 6 ins; 5 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/4393.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/4393/head:pull/4393

PR: https://git.openjdk.java.net/jdk/pull/4393