Error with delete_object_type_caches SQL

I needed to update line 540 and 544, expiration was missing the first backtick.

if ( $delete ) {
  $set_clause = '<code>expiration</code> = %s,
               <code>deleted</code> = 1';
 } else {
  $set_clause =
	'<code>expiration</code> = %s';
 }