...as happens e.g. in
<https://ci.libreoffice.org/job/lo_daily_update_gandalf/515/>.  (Regression
introduced with d157e510
"check-elf-dynamic-objects: allow extending the whitelist via env-var".)

Change-Id: I93097d0bb7781b1bfac818872f40bbe38c5f5fea