Revert "Remove redundant '-h' check."
Revert "Remove redundant '-h' check."

This reverts commit 6a07096ae503b6f548149735c8cb0a2112dcbe53.

dmitriykuptsov/yubikey-personalization,eworm-de/yubikey-personalization,dmitriykuptsov/yubikey-personalization,dmitriykuptsov/yubikey-personalization,Yubico/yubikey-personalization-dpkg,Yubico/yubikey-personalization,eworm-de/yubikey-personalization,Yubico/yubikey-personalization-dpkg,Yubico/yubikey-personalization,Yubico/yubikey-personalization-dpkg,eworm-de/yubikey-personalization