I did not see a line that you are secribing. Here is line 389 and the line before and after.

if (!isset($_GET['seachPID']) && !isset($_GET['pwas-search-button']) && !isset($_GET['updateReturnedPID'])) {
$products_split = new splitPageResults($_GET['page'], STOCK_SET_SBA_NUMRECORDS, $query_products, $products_query_numrows);
}

I do not see a line like you are describing.