[InterNetNews/inn] 464963: Do not make the "break" conditional

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 4649630eec5109fdfc5230b82f914b5dd0dd2a3b
      https://github.com/InterNetNews/inn/commit/4649630eec5109fdfc5230b82f914b5dd0dd2a3b
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2021-12-19 (Sun, 19 Dec 2021)

  Changed paths:
    M innfeed/imap_connection.c

  Log Message:
  -----------
  Do not make the "break" conditional

A few compilers get confused and think there is an implicit fallthrough.