Fix linter errors in livecd-sound
configs/releng/airootfs/usr/local/bin/livecd-sound:
Replace oldstyle expr with a bash test in is_numeric().
Quote variables in pick_a_card().
Fixes #78 (closed)
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configs/releng/airootfs/usr/local/bin/livecd-sound:
Replace oldstyle expr with a bash test in is_numeric().
Quote variables in pick_a_card().
Fixes #78 (closed)