The previous check for a "complete query" omitted the new
PROCESS_UTILITY_QUERY_NONATOMIC value.  This didn't actually make a
difference in practice, because only CALL and SET from PL/pgSQL run in
this state, but it's more correct to include it anyway.

Discussion: https://www.postgresql.org/message-id/4566041d-2567-74d2-d135-19ff6a20fe51%402ndquadrant.com