message: PostgresCommandExecutor: fix return code order
diff: @@ -556,7 +556,7 @@ namespace iroha {
  SELECT CASE
  %s
  WHEN EXISTS (SELECT * FROM inserted LIMIT 1) THEN 0
  - ELSE (SELECT code FROM checks WHERE not result LIMIT 1)
  + ELSE (SELECT code FROM checks WHERE not result ORDER BY code ASC LIMIT 1)
  END AS result;)",
  {(boost::format(R"(has_perm AS (%s),)")
  % checkAccountDomainRoleOrGlobalRolePermission(
  @@ -1314,7 +1314,7 @@ namespace iroha {
  SELECT CASE
  WHEN EXISTS (SELECT * FROM insert_dest LIMIT 1) THEN 0
  %s
  - ELSE (SELECT code FROM checks WHERE not result LIMIT 1)
  + ELSE (SELECT code FROM checks WHERE not result ORDER BY code ASC LIMIT 1)
  END AS result)",
  {(boost::format(R"(
  has_role_perm AS (%s),
  