[SCSI] zfcp: NULL vs 0 usage

Get rid of two 'warning: Using plain integer as NULL pointer'.

Signed-off-by: Heiko Carstens <[e-mail]>
Signed-off-by: Swen Schillig <[e-mail]>
Signed-off-by: James Bottomley <[e-mail]>

drivers/s390/scsi/zfcp_aux.c

···
  * zfcp_gid_pn_buffers_free - free buffers for GID_PN nameserver request
  * @gid_pn: pointer to struct zfcp_gid_pn_data which has to be freed
  */
-static void
-zfcp_gid_pn_buffers_free(struct zfcp_gid_pn_data *gid_pn)
+static void zfcp_gid_pn_buffers_free(struct zfcp_gid_pn_data *gid_pn)
 {
-        if ((gid_pn->ct.pool != 0))
+	if (gid_pn->ct.pool)
 		mempool_free(gid_pn, gid_pn->ct.pool);
 	else
-                kfree(gid_pn);
-
-	return;
+		kfree(gid_pn);
 }
 
 /**

drivers/s390/scsi/zfcp_fsf.c

···
 skip_fsfstatus:
 	send_els->status = retval;
 
-	if (send_els->handler != 0)
+	if (send_els->handler)
 		send_els->handler(send_els->handler_data);
 
 	return retval;