Add missing error codes to PANIC/FATAL error reports in xlog.c and relcache.c

When Who What
2024-04-03 09:11:42 Daniel Gustafsson (d_gustafsson) Closed in commitfest 2024-03 with status: Committed
2024-03-06 09:02:06 Daniel Gustafsson (d_gustafsson) Added d_gustafsson as committer
2024-03-06 09:02:03 Daniel Gustafsson (d_gustafsson) New status: Ready for Committer
2024-02-22 13:57:45 Daniel Gustafsson (d_gustafsson) Added d_gustafsson as reviewer
2024-02-20 07:39:30 Nazir Bilal Yavuz (nbyavuz) Changed authors to Nazir Bilal Yavuz (nbyavuz)
2024-02-20 07:39:22 Nazir Bilal Yavuz (nbyavuz) Attached mail thread CAN55FZ1k8LgLEqncPGmz_fWnrobV6bjABOTH4tOWta6xNcPQig@mail.gmail.com
2024-02-20 07:39:22 Nazir Bilal Yavuz (nbyavuz) Created patch record