6659 nvlist_free(NULL) is a no-op

*** 1064,1074 ****
          if (rfs4_dss_paths != NULL) {
                  /*
                   * Before we lose the ptr, destroy the nvlist and pathnames
                   * array from the warm start before this one.
                   */
-                 if (rfs4_dss_oldpaths)
                          nvlist_free(rfs4_dss_oldpaths);
                  rfs4_dss_oldpaths = rfs4_dss_paths;
          }
  
          /* unpack the buffer into a searchable nvlist */
--- 1064,1073 ----
*** 1463,1475 ****
  
          /* reset the "first NFSv4 request" status */
          rfs4_seen_first_compound = 0;
  
          /* DSS: distributed stable storage */
-         if (rfs4_dss_oldpaths)
                  nvlist_free(rfs4_dss_oldpaths);
-         if (rfs4_dss_paths)
                  nvlist_free(rfs4_dss_paths);
          rfs4_dss_paths = rfs4_dss_oldpaths = NULL;
  }
  
  typedef union {
--- 1462,1472 ----