Comments: Correct $wpdb->prepare() usage in _wp_batch_update_comment_type().

Follow-up to [47597], [48225].

See #50513, #49236.

git-svn-id: https://develop.svn.wordpress.org/trunk@48227 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/comment.php

@@ -3847,9 +3847,9 @@ function _wp_batch_update_comment_type() {
 			SET comment_type = 'comment'
 			WHERE comment_type = ''
 			ORDER BY comment_ID DESC
-			LIMIT %d"
-		),
-		$comment_batch_size
+			LIMIT %d",
+			$comment_batch_size
+		)
 	);
 
 	delete_option( $lock_name );