#352337 by catch: Avoid pager query if there are no comments on a node.

modules/comment/comment.module

@@ -1078,10 +1078,12 @@ function comment_render($node, $cid = 0) {
         $output .= theme('comment_view', $comment, $node, $links);
       }
     }
-    // Only attempt to render comments if the node has been commented upon.
-    else {
+    // Only attempt to render comments if the node has visible comments.
+    // Unpublished comments are not included in $node->comment_count, so show
+    // comments unconditionally if the user is an administrator.
+    elseif ($node->comment_count || user_access('administer comments')) {
 
-      //TODO Convert to dynamic queries once the pager query is updated to the new DBTNG API.
+      // TODO: Convert to dynamic queries once the pager query is updated to the new DBTNG API.
 
       // Multiple comment view.
       $query_count = 'SELECT COUNT(*) FROM {comment} c WHERE c.nid = %d';

modules/comment/comment.pages.inc

@@ -124,15 +124,13 @@ function comment_reply($node, $pid = NULL) {
  */
 function comment_approve($cid) {
   // Load the comment whose cid = $cid
-  if ($comment = comment_load($cid)) {
-    $operations = comment_operations('publish');
-    $query = $operations['publish'][1];
-    $query
-      ->condition('cid', $cid )
-      ->execute();
+  if ($comment = (array) comment_load($cid)) {
+    $comment['status'] = COMMENT_PUBLISHED;
+    $comment['comment_format'] = $comment['format'];
+    comment_save($comment);
 
     drupal_set_message(t('Comment approved.'));
-    drupal_goto("node/$comment->nid");
+    drupal_goto('node/' . $comment['nid']);
   }
   else {
     drupal_set_message(t('The comment you are approving does not exist.'), 'error');