Fix javascript 'errors' found by jslint
There are several JavaScript errors, which have come with PRs:
2362, 2371, 2372.
JavaScript code have to follow jsl requires.
Fixes: https://pagure.io/freeipa/issue/7717
Fixes: https://pagure.io/freeipa/issue/7718
Reviewed-By: Christian Heimes <cheimes@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>