[SCSI] ibmmca: fix a NULL pointer dereference

The variable was dereferenced only if it was NULL (sic)...

Spotted by the Coverity checker.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

drivers/scsi/ibmmca.c

@@ -2412,8 +2412,7 @@ static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start,
 	spin_lock_irqsave(hosts[i]->host_lock, flags);	/* Check it */
 	host_index = i;
 	if (!shpnt) {
-		len += sprintf(buffer + len, "\nIBM MCA SCSI: Can't find adapter for host number %d\n",
-				shpnt->host_no);
+		len += sprintf(buffer + len, "\nIBM MCA SCSI: Can't find adapter");
 		return len;
 	}
 	max_pun = subsystem_maxid(host_index);