If cache file header is corrupted, keep hdr=NULL so cache file isn't tried to be used.
If cache file header is corrupted, keep hdr=NULL so cache file isn't tried
to be used.

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