Bug fixes
- core: fix crash on plugin reload when using musl libc (issue #2052)
- core: fix infinite loop in display when the chat area is too small (issue #2053) * irc: check if arguments are not NULL in some infos
- irc: fix info "irc_is_message_ignored" (issue #2059)
- irc: fix display of self messages when the message split fails due to inconsistent max lengths sent by the server in message 005