Jérôme Augé dca70f809d Fix capture of whiptail's exit status
The exit status of `whiptail` was masked by the subsequent call to
`clear`.

This correct the capture of whiptail's exit status so that pressing the
`[Cancel]` button can be correctly detected by the script.

Fixes #7830
2022-09-22 06:49:07 -04:00
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