Fix possible overflow of pg_stat DSA's refcnt

When Who What
2024-06-27 06:38:03 Anthonin Bonnefoy (bonnefoa) Closed in commitfest 2024-07 with status: Committed
2024-06-27 06:37:46 Anthonin Bonnefoy (bonnefoa) Changed reviewers to Michael Paquier (michael-kun)
2024-06-27 06:37:46 Anthonin Bonnefoy (bonnefoa) Changed committer to michael-kun
2024-06-25 15:25:23 Anthonin Bonnefoy (bonnefoa) Changed authors to Anthonin Bonnefoy (bonnefoa)
2024-06-25 15:25:13 Anthonin Bonnefoy (bonnefoa) Attached mail thread CAO6_XqqJbJBL=M7Ym13TcB4Xnq58vRa2jcC+gwEPBgbAda6B1Q@mail.gmail.com
2024-06-25 15:25:13 Anthonin Bonnefoy (bonnefoa) Created patch record