K 10
svn:author
V 6
jilles
K 8
svn:date
V 27
2016-06-23T20:59:13.431761Z
K 7
svn:log
V 342
posixshm: Fix lock leak when mac_posixshm_check_read rejects read.

While reading the code, I noticed that shm_read() returns without unlocking
foffset and rangelock if mac_posixshm_check_read() rejects the read.

Reviewed by:	kib, jhb, rwatson
Approved by:	re (gjb)
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D6927

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