istream-seekable: Minor code cleanup. stream->buffer and sstream->buffer being two different things was a bit confusing.
istream-seekable: Minor code cleanup.
stream->buffer and sstream->buffer being two different things was a bit
confusing.

damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot,damoxc/dovecot