MAGETWO-35076: Impossible to place order with DHL EU shipping method

- CR Changes

Author: Pechenushko

app/code/Magento/Fedex/Model/Carrier.php

@@ -706,7 +706,8 @@ protected function _parseXmlResponse($response)
         $priceArr = [];
 
         if (strlen(trim($response)) > 0) {
-            if ($xml = $this->parseXml($response)) {
+            $xml = $this->parseXml($response);
+            if (is_object($xml)) {
                 if (is_object($xml->Error) && is_object($xml->Error->Message)) {
                     $errorTitle = (string)$xml->Error->Message;
                 } elseif (is_object($xml->SoftError) && is_object($xml->SoftError->Message)) {

app/code/Magento/Shipping/Model/Carrier/AbstractCarrierOnline.php

@@ -613,19 +613,9 @@ public function getMethodPrice($cost, $method = '')
      *
      * @param string $xmlContent
      * @return \Magento\Shipping\Model\Simplexml\Element|bool
-     * @throws \Exception
      */
     public function parseXml($xmlContent)
     {
-        try {
-            try {
-                return simplexml_load_string($xmlContent);
-            } catch (\Exception $e) {
-                throw new \Exception(__('Failed to parse xml document: %1', $xmlContent));
-            }
-        } catch (\Exception $e) {
-            $this->_logger->critical($e);
-            return false;
-        }
+        return simplexml_load_string($xmlContent, 'Magento\Shipping\Model\Simplexml\Element');
     }
 }

dev/tests/static/testsuite/Magento/Test/Legacy/_files/obsolete_methods.php

@@ -157,6 +157,7 @@
     ['_parseDescription', 'Magento\Sales\Model\Order\Pdf\Items\AbstractItems'],
     ['_parsePackageTheme', 'Magento\Widget\Model\Widget\Instance'],
     ['_parseXmlTrackingResponse', 'Magento\Fedex\Model\Carrier'],
+    ['_parseXml', 'Magento\Fedex\Model\Carrier'],
     ['_prepareCondition', 'Magento\CatalogSearch\Model\Advanced'],
     ['_prepareConfigurableProductData', 'Magento\CatalogImportExport\Model\Export\Product'],
     ['_prepareConfigurableProductPrice', 'Magento\CatalogImportExport\Model\Export\Product'],