Konstantin Belousov e599d951e3 In dqsync(), when called from quotactl(), um_quotas entry might appear
cleared since nothing prevents completion of the parallel quotaoff.
There is nothing to sync in this case, and no reason to panic.

Reported and tested by:	pho
Reviewed by:	mckusick
Sponsored by:	The FreeBSD Foundation
MFC after:	2 weeks
2016-09-08 12:06:43 +00:00
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