rem: cookie->u.dir.ptr = vnode->stream.u.dir.dir_head;
add: cookie->u.dir.ptr = cookie->stream->u.dir.dir_head;
context: devfs_rewind_dir(fs_cookie _fs, fs_vnode _vnode, file_cookie _cookie){	struct devfs *fs = _fs;	struct devfs_vnode *vnode = _vnode;	struct devfs_cookie *cookie = _cookie;		mutex_lock(&fs->lock);	cookie->u.dir.ptr = vnode->stream.u.dir.dir_head;	mutex_unlock(&fs->lock);	return B_OK;}