Ondrej Kozina authored Apr 25, 2016 and Milan Broz committed Apr 25, 2016

- moddir is assigned in parent script run by dracut (warning was
  silenced)

- fix defect wrt to assignement and making variable local on
  same line. The variable cwd was first assigned by subshell
  and later any error originating in subshell was masked by
  making the variable local (which returns always 'true')