mount: Print device obtained from stat() call

For debug purpose.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

mount.c

@@ -387,8 +387,8 @@ static DIR *__open_mountpoint(struct mount_info *pm, int mnt_fd)
 	}
 
 	if (st.st_dev != pm->s_dev) {
-		pr_err("The file system %#x %s %s is inaccessible\n",
-				pm->s_dev, pm->fstype->name, pm->mountpoint);
+		pr_err("The file system %#x (%#x) %s %s is inaccessible\n",
+				pm->s_dev, (int)st.st_dev, pm->fstype->name, pm->mountpoint);
 		goto err;
 	}