5218 posix definition of NULL
correct unistd.h and iso/stddef_iso.h
update gate source affected

*** 342,352 ****
          if (dupev == NULL) {
                  free(ename);
                  return (EAGAIN);
          }
  
!         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME_TYPE, NULL)) {
                  free(ename);
                  sysevent_free(dupev);
                  return (EAGAIN);
          }
  
--- 342,352 ----
          if (dupev == NULL) {
                  free(ename);
                  return (EAGAIN);
          }
  
!         if (nvlist_alloc(&nvl, NV_UNIQUE_NAME_TYPE, 0)) {
                  free(ename);
                  sysevent_free(dupev);
                  return (EAGAIN);
          }
  
*** 369,379 ****
  
          pack_buf = NULL;
          if (nvlist_add_string(nvl, PICLEVENTARG_EVENT_NAME, ename) ||
              nvlist_add_string(nvl, PICLEVENTARG_DATA_TYPE,
              PICLEVENTARG_PICLEVENT_DATA) ||
!             nvlist_pack(nvl, &pack_buf, &nvl_size, NV_ENCODE_NATIVE, NULL)) {
                  free(ename);
                  nvlist_free(nvl);
                  sysevent_free(dupev);
                  return (EAGAIN);
          }
--- 369,379 ----
  
          pack_buf = NULL;
          if (nvlist_add_string(nvl, PICLEVENTARG_EVENT_NAME, ename) ||
              nvlist_add_string(nvl, PICLEVENTARG_DATA_TYPE,
              PICLEVENTARG_PICLEVENT_DATA) ||
!             nvlist_pack(nvl, &pack_buf, &nvl_size, NV_ENCODE_NATIVE, 0)) {
                  free(ename);
                  nvlist_free(nvl);
                  sysevent_free(dupev);
                  return (EAGAIN);
          }
*** 400,410 ****
          init_queue();
  
          (void) mutex_init(&nvq_lock, USYNC_THREAD, NULL);
          (void) cond_init(&nvq_cv, USYNC_THREAD, NULL);
  
!         if (thr_create(NULL, NULL, piclslm_deliver_thr,
              NULL, THR_BOUND, &piclslm_deliver_thr_id) != 0) {
                  (void) mutex_destroy(&nvq_lock);
                  (void) cond_destroy(&nvq_cv);
                  return (NULL);
          }
--- 400,410 ----
          init_queue();
  
          (void) mutex_init(&nvq_lock, USYNC_THREAD, NULL);
          (void) cond_init(&nvq_cv, USYNC_THREAD, NULL);
  
!         if (thr_create(NULL, 0, piclslm_deliver_thr,
              NULL, THR_BOUND, &piclslm_deliver_thr_id) != 0) {
                  (void) mutex_destroy(&nvq_lock);
                  (void) cond_destroy(&nvq_cv);
                  return (NULL);
          }