MC-19746: The shipping address contains null values when there's no shipping address set on a cart

- fix changes to also apply to 2.3.2

Author: cpartica

app/code/Magento/QuoteGraphQl/Model/Resolver/ShippingAddresses.php

@@ -54,10 +54,10 @@ public function resolve(Field $field, $context, ResolveInfo $info, array $value
         /** @var Quote $cart */
         $cart = $value['model'];
 
+        $addressesData = [];
         $shippingAddresses = $cart->getAllShippingAddresses();
 
-        $addressesData = [];
-        if (!empty($shippingAddresses)) {
+        if (count($shippingAddresses)) {
             foreach ($shippingAddresses as $shippingAddress) {
                 $address = $this->extractQuoteAddressData->execute($shippingAddress);