LU-6142 lov: Fix style issues for lov_offset.c

LU-6142 lov: Fix style issues for lov_offset.c

This patch fixes issues reported by checkpatch for file
lustre/lov/lov_offset.c

Change-Id: I0aeeb161bef9247f11a91563f82bce48150001d9
Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.super@gmail.com>
Reviewed-on: https://review.whamcloud.com/33539
Tested-by: Jenkins
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Ben Evans <bevans@cray.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>