RFR: JDK-8302812: JDK-8302455 broke ClassLoaderStatsTest on 32-bit

[Thomas Stuefe]

Trivial fix for a trivial problem. CCS=off variant of test needs to be excluded on 32-bit.

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Commit messages:
 - JDK-8302812-JDK-8302455-broke-ClassLoaderStatsTest-on-32-bit

Changes: https://git.openjdk.org/jdk/pull/12631/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12631&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8302812
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12631.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12631/head:pull/12631

PR: https://git.openjdk.org/jdk/pull/12631