Ticket #56170: typecast-postid-bulk-delete-attachments-1.diff

src/wp-admin/upload.php

@@ -194 +194 @@
                                         wp_die( __( 'Sorry, you are not allowed to delete this item.' ) );
                                 }
 
-                                if ( ! wp_delete_attachment( $post_id_del ) ) {
+                                if ( ! wp_delete_attachment( (int) $post_id_del ) ) {
                                         wp_die( __( 'Error in deleting the attachment.' ) );
                                 }
                         }