6659 nvlist_free(NULL) is a no-op

*** 3629,3639 ****
          nvlp = NULL;
          if (nvlist_unpack((char *)earg, size, &nvlp, NULL) ||
              nvlist_lookup_string(nvlp, PICLEVENTARG_DEVFS_PATH, &devfs_path) ||
              strlen(devfs_path) > (PATH_MAX - sizeof (PLATFORM_PATH))) {
                  syslog(LOG_INFO, PICL_EVENT_DROPPED, ename);
-                 if (nvlp)
                          nvlist_free(nvlp);
                  return;
          }
  
          (void) strlcpy(ptreepath, PLATFORM_PATH, PATH_MAX);
--- 3629,3638 ----