function update_average_material_cost($supplier, $stock_id, $price, $qty, $date, $adj_only=false)
{
- $currency = get_supplier_currency($supplier);
+ if ($supplier != null)
+ $currency = get_supplier_currency($supplier);
+ else
+ $currency = null;
if ($currency != null)
$price_in_home_currency = to_home_currency($price, $currency, $date);
else