Send nfs_export_t to untraverse()

@@ -649,11 +649,11 @@
 extern void     exi_rele(struct exportinfo *);
 extern struct exportinfo *nfs_vptoexi(vnode_t *, vnode_t *, cred_t *, int *,
     int *, bool_t);
 extern int      nfs_check_vpexi(vnode_t *, vnode_t *, cred_t *,
                         struct exportinfo **);
-extern vnode_t *untraverse(vnode_t *);
+extern vnode_t *untraverse(struct nfs_export *, vnode_t *);
 extern int      vn_is_nfs_reparse(vnode_t *, cred_t *);
 extern int      client_is_downrev(struct svc_req *);
 extern char    *build_symlink(vnode_t *, cred_t *, size_t *);
 
 extern fhandle_t nullfh2;       /* for comparing V2 filehandles */