From 8fc5329fe920b137ff4e3d77d07543fb139444ce Mon Sep 17 00:00:00 2001
From: bMancone <brice.mancone@prestashop.com>
Date: Mon, 20 Feb 2012 13:58:19 +0000
Subject: [PATCH] // Fixed #PSFV-521

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@13461 b9a71923-0436-4b27-9f14-aed3839534dd
---
 classes/Product.php | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/classes/Product.php b/classes/Product.php
index b63289ca1..bc4ff4be2 100644
--- a/classes/Product.php
+++ b/classes/Product.php
@@ -3960,12 +3960,16 @@ class ProductCore extends ObjectModel
 	 */
 	public function addStockMvt($quantity, $id_reason, $id_product_attribute = null, $id_order = null, $id_employee = null)
 	{
-		if (!$this->id)
-			return;
+		if (!$this->id || !$id_reason)
+			return false;
 
 		if ($id_product_attribute == null)
 			$id_product_attribute = 0;
 
+		$reason = new StockMvtReason((int)$id_reason);
+		if (!Validate::isLoadedObject($reason))
+			return false;
+
 		$quantity = abs((int)$quantity) * $reason->sign;
 
 		return StockAvailable::updateQuantity($this->id, $id_product_attribute, $quantity);