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

@@ -1340,11 +1340,11 @@
             (ret->snap == NULL) || (ret->running_pg == NULL)) {
                 goto out;
         }
 
         if (scf_handle_decode_fmri(ret->h, fmri, NULL, NULL, ret->inst,
-            NULL, NULL, NULL) == -1) {
+            NULL, NULL, 0) == -1) {
                 goto out;
         }
 
         if ((scf_instance_get_snapshot(ret->inst, "running", ret->snap))
             != 0) {