[SCSI] bfa: Fixes for 0-terminated strncpy and possible null pointer dereference

This patch fixes two cppcheck errors in drivers/scsi/bfa/bfad_im.c

[jejb: correct strlcpy fix]
Signed-off-by: Jakob Normark <jakobnormark@gmail.com>
Acked-by: Vijay Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>