lib-imap: imap_append_string_for_humans() was broken for empty input string.
lib-imap: imap_append_string_for_humans() was broken for empty input string.

jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot