Steve Kowalik 556535caaa Don't use wc -l for the umount check ...

We don't need the follow the pattern of checking wc -l against
/proc/mounts is 0, we care about any match, so we can just use
grep and it's exit code inside the if.

Change-Id: Idd0d78a613f8b43f169a320527c763d0bff74368

2016-01-28 19:24:10 +11:00

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