[Pharo 9.0] Build #389: Close popup only if not nil

There is a new Pharo build available!
 
The status of the build #389 was: FAILURE.

The Pull Request #6629 was integrated: "Close popup only if not nil"
Pull request url: https://github.com/pharo-project/pharo/pull/6629

Issue Url: https://github.com/pharo-project/pharo/issues/issue/6407
Build Url: https://ci.inria.fr/pharo-ci-jenkins2/job/Test%20pending%20pull%20request%20and%20branch%20Pipeline/job/Pharo9.0/389/