vhost/scsi: silence uninitialized variable warning

This is to silence an uninitialized variable warning in debug output.
The problem is this line:

	pr_debug("vhost_get_vq_desc: head: %d, out: %u in: %u\n",
		 head, out, in);

If "head == vq->num" is true on the first iteration then "out" and "in"
aren't initialized.  We handle that a few lines after the printk.  I was
tempted to just delete the pr_debug() but I decided to just initialize
them to zero instead.

Also checkpatch.pl complains if variables are declared as just
"unsigned" without the "int".
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

drivers/vhost/scsi.c

@@ -843,7 +843,7 @@ vhost_scsi_handle_vq(struct vhost_scsi *vs, struct vhost_virtqueue *vq)
 	struct iov_iter out_iter, in_iter, prot_iter, data_iter;
 	u64 tag;
 	u32 exp_data_len, data_direction;
-	unsigned out, in;
+	unsigned int out = 0, in = 0;
 	int head, ret, prot_bytes;
 	size_t req_size, rsp_size = sizeof(struct virtio_scsi_cmd_resp);
 	size_t out_size, in_size;