MsgContainer->rendered() was calling the HTML renderer twice per part for no apparent reason.
MsgContainer->rendered() was calling the HTML renderer twice per part for no apparent reason.

git-svn-id: d99324e817494df82bb0080d8e7ab74680731a10@6723 13f79535-47bb-0310-9956-ffa450edef68

apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin,apache/spamassassin