block/rnbd-clt: Get rid of warning regarding size argument in strlcpy

The kernel test robot triggerred the following warning,

>> drivers/block/rnbd/rnbd-clt.c:1397:42: warning: size argument in
'strlcpy' call appears to be size of the source; expected the size of the
destination [-Wstrlcpy-strlcat-size]
	strlcpy(dev->pathname, pathname, strlen(pathname) + 1);
					      ~~~~~~~^~~~~~~~~~~~~

To get rid of the above warning, use a kstrdup as Bart suggested.

Fixes: 64e8a6ece1 ("block/rnbd-clt: Dynamically alloc buffer for pathname & blk_symlink_name")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

drivers/block/rnbd/rnbd-clt.c

@@ -1388,12 +1388,11 @@ static struct rnbd_clt_dev *init_dev(struct rnbd_clt_session *sess,
 		goto out_queues;
 	}
 
-	dev->pathname = kzalloc(strlen(pathname) + 1, GFP_KERNEL);
+	dev->pathname = kstrdup(pathname, GFP_KERNEL);
 	if (!dev->pathname) {
 		ret = -ENOMEM;
 		goto out_queues;
 	}
-	strlcpy(dev->pathname, pathname, strlen(pathname) + 1);
 
 	dev->clt_device_id	= ret;
 	dev->sess		= sess;