A trivial fix to ProblemList tests failing due to UseBiasedLocking going away
------------- Commit messages: - 8268574: ProblemList tests failing due to UseBiasedLocking going away Changes: https://git.openjdk.java.net/jdk/pull/4469/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4469&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8268574 Stats: 5 lines in 1 file changed: 4 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/4469.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4469/head:pull/4469 PR: https://git.openjdk.java.net/jdk/pull/4469
