Change capcode binding from int to string, needed for newer PHP support

inc/functions.php

@@ -1045,10 +1045,10 @@ function post(array $post) {
 	}
 
 	if ($post['mod'] && isset($post['capcode']) && $post['capcode']) {
-		$query->bindValue(':capcode', $post['capcode'], PDO::PARAM_INT);
+		$query->bindValue(':capcode', $post['capcode'], PDO::PARAM_STR);
 	} else {
 		if ($config['joke_capcode']  && isset($post['capcode']) && $post['capcode'] === 'joke') {
-			$query->bindValue(':capcode', $post['capcode'], PDO::PARAM_INT);
+			$query->bindValue(':capcode', $post['capcode'], PDO::PARAM_STR);
 		}
 		else {
 			$query->bindValue(':capcode', null, PDO::PARAM_NULL);