Ticket #30991: 30991-check_for_optional_variable_set_before_using.diff

src/wp-admin/includes/class-wp-posts-list-table.php

@@ -208 +208 @@
                         $actions['edit'] = __( 'Edit' );
                 }
 
-                if ( current_user_can( $post_type_obj->cap->delete_posts ) ) {
+                if ( isset($post_type_obj->cap->delete_posts) && current_user_can( $post_type_obj->cap->delete_posts ) ) {
                         if ( $this->is_trash || ! EMPTY_TRASH_DAYS ) {
                                 $actions['delete'] = __( 'Delete Permanently' );
                         } else {