message: body -> content.body
diff: @@ -1526,7 +1526,7 @@ MatrixHandler.prototype._textForReplyEvent = Promise.coroutine(function*(event,
  try {
  const eventContent = yield this.ircBridge.getAppServiceBridge().getIntent().getEvent(event.room_id, eventId);
  rplName = eventContent.sender;
  - rplSource = eventContent.body.substr(0, REPLY_SOURCE_MAX_LENGTH);
  + rplSource = eventContent.content.body.substr(0, EVENT_CACHE_LENGTH);
  this._eventCache.set(eventId, {sender: rplName, body: rplSource});
  } catch (err) {
  // If we couldn't find the event, then frankly we can't trust it and we won't treat it as a reply.
  