[-] FO : #PSCFV-3268 - Fix bug with cache and cart rule discount calculation

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@16661 b9a71923-0436-4b27-9f14-aed3839534dd

classes/PaymentModule.php

@@ -321,6 +321,10 @@ abstract class PaymentModuleCore extends Module
 			$cart_rule_used = array();
 			$products = $this->context->cart->getProducts();
 			$cart_rules = $this->context->cart->getCartRules();
+			
+			// Make sure CarRule caches are empty
+			CartRule::cleanCache();
+			
 			foreach ($order_detail_list as $key => $order_detail)
 			{
 				$order = $order_list[$key];