Bogus DB query introduced in 2.78

Hi,

In Version 2.78, function dsq_request_handler(), case ‘export_comments’, the query to get max_post_id changed from

SELECT MAX(ID) …

to

SELECT MAX(%d)

(where $post_id is passed as second parameter to $wpdb->prepare()).

I’m not quite sure wether this is intentional, but it clearly looks wrong, because the result of the query now will alwys be $post_id, causing $eof to alwys beeing 1.

Here’s a diff to fix this (but please don’t apply without review). It also removes the here unneeded $wpdb->prepare() (there are no parameters involved, so no need to prepare anything):

https://volkswurst.de/presswurst/disqus-comment-system.diff

— kili

https://www.ads-software.com/plugins/disqus-comment-system/