LU-6142 ptlrpc: Fix style issues for sec_gc.c

LU-6142 ptlrpc: Fix style issues for sec_gc.c

This patch fixes issues reported by checkpatch for
file lustre/ptlrpc/sec_gc.c

Change-Id: I19f9f86aba86417b31245da4246c2d6eeb0a3752
Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.super@gmail.com>
Reviewed-on: https://review.whamcloud.com/34551
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Sebastien Buisson <sbuisson@ddn.com>
Reviewed-by: James Simmons <uja.ornl@yahoo.com>