scsi: fnic: Remove unnecessary NUL-terminations

strscpy_pad() already NUL-terminates 'data' at the corresponding
indexes. Remove any unnecessary NUL-terminations.

No functional changes intended.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://lore.kernel.org/r/20250314221626.43174-2-thorsten.blum@linux.dev


Reviewed-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>