PQputCopyEnd never returns 0, fix the inaccurate comment

When Who What
2023-08-30 10:28:37 Aleksander Alekseev (aalekseev) Closed in commitfest 2023-09 with status: Committed
2023-08-30 10:28:37 Aleksander Alekseev (aalekseev) Changed committer to michael-kun
2023-08-28 11:49:38 Aleksander Alekseev (aalekseev) Changed reviewers to Aleksander Alekseev (a.alekseev)
2023-08-28 11:49:38 Aleksander Alekseev (aalekseev) Changed authors to Zhao Junwang (zhjwpku)
2023-08-28 11:49:18 Aleksander Alekseev (aalekseev) Attached mail thread CAEG8a3Jt5KwMNr+_S6VN68rog4HeoG6ELvPQO8kZNQTeJeQ=rQ@mail.gmail.com
2023-08-28 11:49:18 Aleksander Alekseev (aalekseev) Created patch record