Ticket #36208: 34918.diff

wp-admin/includes/class-wp-comments-list-table.php

@@ -492 +492 @@
                 if ( $comment->comment_post_ID > 0 ) {
                         $post = get_post( $comment->comment_post_ID );
                 }
+                //Check if post type exists or not
+                $post_type_object = get_post_type_object( $post->post_type );
+
+                //Return, If the post type doesn't exists anymore
+                if( !is_object( $post_type_object ) || null == $post_type_object ) {
+                        return;
+                }
+
                 $this->user_can = current_user_can( 'edit_comment', $comment->comment_ID );
 
                 echo "<tr id='comment-$comment->comment_ID' class='$the_comment_class'>";