[SCSI] lpfc : scsi command accessor fix for 8.2.2

It was pointed out by Boaz Harrosh <bharrosh@panasas.com> that our
8.2.2 lpfc patches revert a change to using SCSI command accessor
functions.

This patch, to be applied on top of the 8.2.2. patches, updates the
driver for the accessor functions.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 94458d7..17d7dc0 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -499,7 +499,7 @@
 					 "0717 FCP command x%x residual "
 					 "underrun converted to error "
 					 "Data: x%x x%x x%x\n",
-					 cmnd->cmnd[0], cmnd->request_bufflen,
+					 cmnd->cmnd[0], scsi_bufflen(cmnd),
 					 scsi_get_resid(cmnd), cmnd->underflow);
 			host_status = DID_ERROR;
 		}