Bug#997080: openvdb: FTBFS: help2man: can't get `--help' info from ./debian/tmp/usr/bin/vdb_view

[Mathieu Malaterre]

Control: notfound -1 8.1.0-3
Control: tags -1 wontfix

I cannot reproduce the issue:
* On my local sid schroot,
* On barriere.d.o
* The exp. buildds are working as expected:
** 
https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=amd64&ver=9.0.0-2&stamp=1638489598&raw=0