LU-6142 lfsck: Fix style issues for lfsck_namespace.c

LU-6142 lfsck: Fix style issues for lfsck_namespace.c

This patch fixes issues reported by checkpatch
for file lustre/lfsck/lfsck_namespace.c

Test-Parameters: trivial
Signed-off-by: Arshad Hussain <arshad.hussain@aeoncomputing.com>
Change-Id: Ie415d9ace24adaa845a4298499128b2766dc66aa
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/54213
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Timothy Day <timday@amazon.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>