Fix a memory leak in sr_ioctl_createraid().

Found while reading the code.

OK marco@ oga@.

Author: martelletto

sys/dev/softraid.c

@@ -3267,7 +3267,7 @@ sr_ioctl_createraid(struct sr_softc *sc, struct bioc_createraid *bc,
 	struct scsi_link	*link;
 	struct device		*dev;
 	char			*uuid, devname[32];
-	dev_t			*dt;
+	dev_t			*dt = NULL;
 	int			i, no_chunk, rv = EINVAL, target, vol;
 	int			no_meta;
 
@@ -3536,6 +3536,8 @@ sr_ioctl_createraid(struct sr_softc *sc, struct bioc_createraid *bc,
 
 	sd->sd_ready = 1;
 
+	free(dt, M_DEVBUF, bc->bc_dev_list_len);
+
 	return (rv);
 
 unwind:
@@ -3544,6 +3546,8 @@ sr_ioctl_createraid(struct sr_softc *sc, struct bioc_createraid *bc,
 	if (rv == EAGAIN)
 		rv = 0;
 
+	free(dt, M_DEVBUF, bc->bc_dev_list_len);
+
 	return (rv);
 }