Fix build broken on 8.4 and 9.0.
Fix build broken on 8.4 and 9.0.

bwtakacy/prev_pg_bulkload_repo,bwtakacy/pg_bulkload,bwtakacy/pg_bulkload,bwtakacy/prev_pg_bulkload_repo,ooyamams/pg_bulkload,ooyamams/pg_bulkload,bwtakacy/pg_bulkload,ooyamams/pg_bulkload,bwtakacy/prev_pg_bulkload_repo