Removed assert. In normal situations it doesn't happen and in error cases (cached offset is invalid) it causes a crash.
Removed assert. In normal situations it doesn't happen and in error cases
(cached offset is invalid) it causes a crash.

--HG--
branch : HEAD

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