aux/util: fix truncation warning

5 jobs for master in 40 seconds (queued for 2 seconds)
Status Name Job ID Coverage
  Container Prep
passed arch:container_prep #367541

00:00:18

passed debian:container_prep #367540

00:00:19

 
  Build
passed arch:build-cmake #367544

00:00:21

passed debian:build-cmake #367543

00:00:18

passed format-and-spellcheck #367542

00:00:13