FreeBSD_HEAD_amd64_gcc4.9 - Build #712 - Fixed

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FreeBSD_HEAD_amd64_gcc4.9 - Build #712 - Fixed:

Build information: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/712/
Full change log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/712/changes
Full build log: https://jenkins.FreeBSD.org/job/FreeBSD_HEAD_amd64_gcc4.9/712/console

Change summaries:

289821 by hselasky:
Fix kernel build by restoring a temporary variable which was not yet
ripe for removal.

289819 by mav:
Fix LUN disable in CAM broken at r285155.

MFC after:	1 week