RFR: 8288530: ProblemList serviceability/jvmti/VMObjectAlloc/VMObjectAllocTest.java in -Xcomp mode

[Daniel D.Daugherty]

A trivial fix to ProblemList serviceability/jvmti/VMObjectAlloc/VMObjectAllocTest.java in -Xcomp mode.

Humor note: The product bug ID and ProblemList bug ID differ by exactly 100.

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Commit messages:
 - 8288530: ProblemList serviceability/jvmti/VMObjectAlloc/VMObjectAllocTest.java in -Xcomp mode

Changes: https://git.openjdk.org/jdk/pull/9173/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=9173&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8288530
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/9173.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9173/head:pull/9173

PR: https://git.openjdk.org/jdk/pull/9173