LU-16952 debug: don't put extra new line at output

LU-16952 debug: don't put extra new line at output

n already in output line.

HPe-bug-id: LUS-11707
Test-Parameters: trivial
Signed-off-by: Alexey Lyashkov <alexey.lyashkov@hpe.com>
Change-Id: I30667b5fe269aa8b80d5b2101d397f34b75f8e30
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/51675
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Petros Koutoupis <petros.koutoupis@hpe.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>