Ticket #49236: 49236.3.patch

src/wp-includes/class-wp-comment-query.php

@@ -741 +741 @@
 
                                         case 'comment':
                                         case 'comments':
+                                                $comment_types[ $operator ][] = "''";
                                                 $comment_types[ $operator ][] = "'comment'";
                                                 break;
 

src/wp-includes/comment.php

@@ -1902 +1902 @@
         $comment_karma    = ! isset( $data['comment_karma'] ) ? 0 : $data['comment_karma'];
         $comment_approved = ! isset( $data['comment_approved'] ) ? 1 : $data['comment_approved'];
         $comment_agent    = ! isset( $data['comment_agent'] ) ? '' : $data['comment_agent'];
-        $comment_type     = ! isset( $data['comment_type'] ) ? 'comment' : $data['comment_type'];
+        $comment_type     = empty( $data['comment_type'] ) ? 'comment' : $data['comment_type'];
         $comment_parent   = ! isset( $data['comment_parent'] ) ? 0 : $data['comment_parent'];
 
         $user_id = ! isset( $data['user_id'] ) ? 0 : $data['user_id'];