patch tsoome-feedback
6659 nvlist_free(NULL) is a no-op

*** 8288,8298 ****
          }
  
          return (nvl);
  
  out:
-         if (nvl)
                  nvlist_free(nvl);
  
          if (dev_name)
                  free(dev_name);
  
--- 8288,8297 ----
*** 8362,8372 ****
  
                  if (tmp->class != NULL)
                          free(tmp->class);
                  if (tmp->subclass != NULL)
                          free(tmp->subclass);
-                 if (tmp->nvl != NULL)
                          nvlist_free(tmp->nvl);
                  syseventq_back = syseventq_back->next;
                  if (syseventq_back == NULL)
                          syseventq_front = NULL;
                  free(tmp);
--- 8361,8370 ----