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

@@ -659,15 +659,15 @@
 
         if (set_object_policy(hKeySRK, TSS_SECRET_MODE_SHA1, NULL,
             sizeof (well_known), well_known))
                 return (ERR_FAIL);
 
-        ret = Tspi_TPM_TakeOwnership(hTPM, hKeySRK, NULL);
+        ret = Tspi_TPM_TakeOwnership(hTPM, hKeySRK, (TSS_HKEY)NULL);
         if (ret == TPM_E_NO_ENDORSEMENT) {
                 if (createek(hContext, hTPM))
                         return (ERR_FAIL);
-                ret = Tspi_TPM_TakeOwnership(hTPM, hKeySRK, NULL);
+                ret = Tspi_TPM_TakeOwnership(hTPM, hKeySRK, (TSS_HKEY)NULL);
         }
         if (ret) {
                 print_error(ret, gettext("Take ownership"));
                 return (ERR_FAIL);
         }

@@ -699,11 +699,11 @@
         }
         if (set_policy_options(hNewPolicy, TSS_SECRET_MODE_POPUP,
             gettext("= New TPM owner passphrase ="), 0, NULL))
                 return (ERR_FAIL);
 
-        ret = Tspi_ChangeAuth(hTPM, NULL, hNewPolicy);
+        ret = Tspi_ChangeAuth(hTPM, (TSS_HOBJECT)NULL, hNewPolicy);
         if (ret && ret != TSP_ERROR(TSS_E_POLICY_NO_SECRET)) {
                 print_error(ret, gettext("Change authorization"));
                 return (ERR_FAIL);
         }