[Pharo 8.0] Build #719: Fix bug introduced with Spec2 migration.

There is a new Pharo build available!
 
The status of the build #719 was: FAILURE.

The Pull Request #4538 was integrated: "Fix bug introduced with Spec2 migration."
Pull request url: https://github.com/pharo-project/pharo/pull/4538

Issue Url: https://github.com/pharo-project/pharo/issues/4529
Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/Pharo8.0/719/