Bug#771527: mdadm: error file not found

[westlake]

Package: mdadm
Version: 3.3.2-2
Severity: normal

I caught this listed when "journalctl -b" was typed soon after a bootup

"systemd[384]: Failed at step EXEC spawning 
/usr/lib/systemd/scripts/mdadm_env.sh: No such file or directory"

Here I've got raid devices working despite the error message showing up 
in systemd's logging

should be an easy fix
thanks