sdbox: If copying with link() fails with ENOENT, fallback to trying regular copying. This also fixes missing error reporting for that case.
sdbox: If copying with link() fails with ENOENT, fallback to trying regular copying.
This also fixes missing error reporting for that case.

LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot,LTD-Beget/dovecot