[InterNetNews/inn] 3ed48a: lib/remopen.c: Improve log message

[Julien ÉLIE]

  Branch: refs/heads/main
  Home:   https://github.com/InterNetNews/inn
  Commit: 3ed48a5ffc81fb933e8f35ba0320ee34467ef068
      https://github.com/InterNetNews/inn/commit/3ed48a5ffc81fb933e8f35ba0320ee34467ef068
  Author: Julien ÉLIE <Julien-Elie at users.noreply.github.com>
  Date:   2023-04-14 (Fri, 14 Apr 2023)

  Changed paths:
    M lib/remopen.c

  Log Message:
  -----------
  lib/remopen.c: Improve log message

Mention in the error log how to fix the problem (setting the "server"
parameter in inn.conf).