LU-6142 utils: Fix style issues for lctl.c

LU-6142 utils: Fix style issues for lctl.c

This patch fixes issues reported by checkpatch
for file lustre/utils/lctl.c

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.super@gmail.com>
Change-Id: I0e9f9dd9db9f5ba64371283ce2afcabcead0b370
Reviewed-on: https://review.whamcloud.com/38708
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Ben Evans <beevans@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Petros Koutoupis <petros.koutoupis@hpe.com>