RFR: 8375282: G1: Fix wrong indendation introduced by JDK-8374743

[Thomas Schatzl]

Hi all,

  please review this trivial fix to indendation introduced by JDK-8375282.

Testing: local compilation, gha

Thanks,
  Thomas

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Commit messages:
 - 8375282

Changes: https://git.openjdk.org/jdk/pull/29227/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29227&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8375282
  Stats: 2 lines in 1 file changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/29227.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29227/head:pull/29227

PR: https://git.openjdk.org/jdk/pull/29227