LU-5323 utils: fix memory leak in lfs_hsm_request()

LU-5323 utils: fix memory leak in lfs_hsm_request()

Fix memory leak in error case in lfs_hsm_request().  hur is allocated,
and should be freed befor being overwritten.
Cleanup error messages.

Signed-off-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Change-Id: I9c01400fafb53e3914b9ed5eb9c8c9e575423551
Reviewed-on: http://review.whamcloud.com/11116
Tested-by: Jenkins
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: frank zago <fzago@cray.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>