signed vs. unsigned warning fix
signed vs. unsigned warning fix

Distrotech/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,LTD-Beget/dovecot,Distrotech/dovecot,damoxc/dovecot,LTD-Beget/dovecot,damoxc/dovecot,LTD-Beget/dovecot,Distrotech/dovecot