Send nfs_export_t to untraverse()

*** 989,999 ****
                                  return (puterrno4(ENOENT));
  
                          /*
                           * Traverse back to the mounted-on filesystem
                           */
!                         dvp = untraverse(dvp);
  
                          /*
                           * Set the different_export flag so we remember
                           * to pick up a new exportinfo entry for
                           * this new filesystem.
--- 989,999 ----
                                  return (puterrno4(ENOENT));
  
                          /*
                           * Traverse back to the mounted-on filesystem
                           */
!                         dvp = untraverse(ne, dvp);
  
                          /*
                           * Set the different_export flag so we remember
                           * to pick up a new exportinfo entry for
                           * this new filesystem.
*** 2730,2746 ****
  
                          /*
                           * If at the system root, then can
                           * go up no further.
                           */
!                         if (VN_CMP(cs->vp, ZONE_ROOTVP()))
                                  return (puterrno4(ENOENT));
  
                          /*
                           * Traverse back to the mounted-on filesystem
                           */
!                         cs->vp = untraverse(cs->vp);
  
                          /*
                           * Set the different_export flag so we remember
                           * to pick up a new exportinfo entry for
                           * this new filesystem.
--- 2730,2746 ----
  
                          /*
                           * If at the system root, then can
                           * go up no further.
                           */
!                         if (VN_IS_CURZONEROOT(cs->vp))
                                  return (puterrno4(ENOENT));
  
                          /*
                           * Traverse back to the mounted-on filesystem
                           */
!                         cs->vp = untraverse(cs->exi->exi_ne, cs->vp);
  
                          /*
                           * Set the different_export flag so we remember
                           * to pick up a new exportinfo entry for
                           * this new filesystem.