product_id is a hash key, not an object property

[ondrej]

Changing $item->product_id to $item['product_id'] in woocommerce.php:296 and woocommerce.php:301 fixes this problem:

PHP message: PHP Notice: Trying to get property of non-object in {path}/web/app/plugins/segmentio/integrations/ecommerce/woocommerce.php on line 296

PHP message: PHP Notice: Trying to get property of non-object in {path}/web/app/plugins/segmentio/integrations/ecommerce/woocommerce.php on line 301

[zstepek]

The correct way to fix this would be to use the new get_id() method on the product object, I believe.