[SCSI] zfcp: NULL vs 0 usage

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

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 0eb31e1..b240800 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -1930,7 +1930,7 @@
 skip_fsfstatus:
 	send_els->status = retval;
 
-	if (send_els->handler != 0)
+	if (send_els->handler)
 		send_els->handler(send_els->handler_data);
 
 	return retval;