rem: devfs_close(fs_cookie _fs, fs_vnode _v, file_cookie _cookie)
add: devfs_close(fs_volume _fs, fs_vnode _v, fs_cookie _cookie)
context: devfs_close(fs_cookie _fs, fs_vnode _v, file_cookie _cookie){	struct devfs_vnode *vnode = _v;	struct devfs_cookie *cookie = _cookie;	TRACE(("devfs_close: entry vnode %p, cookie %p\n", vnode, cookie));	if (vnode->stream.type == STREAM_TYPE_DEVICE) {		// pass the call through to the underlying device		return vnode->stream.u.dev.calls->close(cookie->u.dev.dcookie);	}	return B_OK;}