6659 nvlist_free(NULL) is a no-op

*** 1921,1931 ****
           */
          CT_DEBUG((CE_NOTE, "publish: dropping devi_ct_lock"));
          mutex_exit(&(DEVI(dip)->devi_ct_lock));
  
  out:
-         if (tnvl)
                  nvlist_free(tnvl);
          if (path)
                  kmem_free(path, MAXPATHLEN);
  
  
--- 1921,1930 ----