lib-imap: imap_arg_get_atom() should also treat NIL as valid atom.
lib-imap: imap_arg_get_atom() should also treat NIL as valid atom.

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