[faiproject/fai] a71617: fix syntax error

[Mrfai]

  Branch: refs/heads/master
  Home:   https://github.com/faiproject/fai
  Commit: a71617d591a12e99e4b1f7f06750d4c0eed7f5b8
      https://github.com/faiproject/fai/commit/a71617d591a12e99e4b1f7f06750d4c0eed7f5b8
  Author: Thomas Lange <lange at debian.org>
  Date:   2022-06-24 (Fri, 24 Jun 2022)

  Changed paths:
    M bin/fcopy

  Log Message:
  -----------
  fix syntax error