LU-15535 lmv: fix lmv_stripe_object_dump() CDEBUG

LU-15535 lmv: fix lmv_stripe_object_dump() CDEBUG

"refs" and "magic" are reversed in CDEBUG() arguments of
lmv_stripe_object_dump().

Test-Parameters: trivial
Fixes: 3ebc8e0528e3 ("LU-15535 llite: deadlock on lli_lsm_sem")
Signed-off-by: Etienne AUJAMES <eaujames@ddn.com>
Change-Id: Ibb4dc6ea38b506f7262da92699cf5ed97a362f3d
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/56647
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Qian Yingjin <qian@ddn.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>