[crac] RFR: Fix failures in testsuite

[Radim Vansa]

This PR fixes some failures I've noticed in the pre-submit checks and could also reproduce locally.

-------------

Commit messages:
 - Fix failures in testsuite

Changes: https://git.openjdk.org/crac/pull/44/files
 Webrev: https://webrevs.openjdk.org/?repo=crac&pr=44&range=00
  Stats: 8 lines in 1 file changed: 6 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/crac/pull/44.diff
  Fetch: git fetch https://git.openjdk.org/crac pull/44/head:pull/44

PR: https://git.openjdk.org/crac/pull/44