6447 handful of nvpair cleanups

*** 1623,1632 ****
--- 1623,1634 ----
                  *ep = NULL;
  
          if ((nvl == NULL) || (name == NULL))
                  return (EINVAL);
  
+         sepp = NULL;
+         idx = 0;
          /* step through components of name */
          for (np = name; np && *np; np = sepp) {
                  /* ensure unique names */
                  if (!(nvl->nvl_nvflag & NV_UNIQUE_NAME))
                          return (ENOTSUP);
*** 2380,2390 ****
           * will be to remove the kmflag from nvlist_pack(), but we will
           * not change the interface.
           */
          nv_priv_init(&nvpriv, nva, 0);
  
!         if (err = nvlist_size(nvl, &alloc_size, encoding))
                  return (err);
  
          if ((buf = nv_mem_zalloc(&nvpriv, alloc_size)) == NULL)
                  return (ENOMEM);
  
--- 2382,2392 ----
           * will be to remove the kmflag from nvlist_pack(), but we will
           * not change the interface.
           */
          nv_priv_init(&nvpriv, nva, 0);
  
!         if ((err = nvlist_size(nvl, &alloc_size, encoding)))
                  return (err);
  
          if ((buf = nv_mem_zalloc(&nvpriv, alloc_size)) == NULL)
                  return (ENOMEM);