[-] BO : fix bug #PSCFV-2897 - JS error on combination page

git-svn-id: http://dev.prestashop.com/svn/v1/branches/1.5.x@16119 b9a71923-0436-4b27-9f14-aed3839534dd

js/admin-products.js

@@ -527,13 +527,16 @@ product_tabs['Prices'] = new function(){
 			context: this,
 			async: false,
 			success: function(data) {
-				if (data.status == 'ok')
+				if (data !== null)
 				{
-					showSuccessMessage(data.message);
+					if (data.status == 'ok')
-					parent.remove();
+					{
+						showSuccessMessage(data.message);
+						parent.remove();
+					}
+					else
+						showErrorMessage(data.message);
 				}
-				else
-					showErrorMessage(data.message);
 			}
 		});
 	};