liveness: fix merge typo logic error

Oops, I made a terrible mistake when applying a small fixup when merging
f10b9e8fd72aae33b127c18e3f8a64a4f56b1b69.
82ad66b2f2Andrew Kelley committed on 6/25/2023, 8:02:55 AMparenta31ba25
1 file changedLine totals unavailable