node aggregate pages show trackback count that includes unpublished spam trackbacks

trackback.module's integration with spam.module seems to not extend to the generation of the node's $links

when a trackback spam is detected, and marked as spam and unpublished through the spam.module hook, it is still counted.

I have a few front-page nodes like this, one post that shows a link for "16 trackbacks" -- but all of them were spam, and so clicking on this link leads to the page for the node alone, and with no trackbacks visible.