rem: struct vnode *vnode = descriptor->vnode;
add: struct vnode *vnode = descriptor->u.vnode;
context: file_close(struct file_descriptor *descriptor){	struct vnode *vnode = descriptor->vnode;	FUNCTION(("file_close(descriptor = %p)\n", descriptor));	if (FS_CALL(vnode, close))		return FS_CALL(vnode, close)(vnode->mount->cookie, vnode->private_node, descriptor->cookie);	return B_OK;}