Merge pull request 'fix: never set to nil: poster of an issue or comment; assignee of a comment' (#4729) from earl-warren/forgejo:wip-ghost-npe into forgejo
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4729
Reviewed-by: Caesar Schinas <caesar@caesarschinas.com>
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>