[Pharo-project] why (MCPackage named: 'NonExistenPackage') unload. doesnt fail ?

Do we want that? I am finding a lot of outdated code that uses code like that and it doesnt fail, but still doesnt unload the package. For example, cleanUpForRelease does a (MCPackage named: 'HelpSystem') unload. and that package doesnt exist anymore since it was split.... so...do we want that silent behaviour ? cheers mariano