Minor fixes

Author: veewee

src/Locator/SoapBodyLocator.php

@@ -13,7 +13,7 @@ final class SoapBodyLocator
 {
     public function __invoke(DOMDocument $document): ?DOMElement
     {
-        $soapNs = $document->namespaceURI ?? '';
+        $soapNs = $document->documentElement->namespaceURI ?? '';
         $xpath = Document::fromUnsafeDocument($document)->xpath(namespaces(['soap' => $soapNs]));
 
         return $xpath->query('//soap:Envelope/soap:Body')->first();

src/Locator/SoapHeaderLocator.php

@@ -13,7 +13,7 @@ final class SoapHeaderLocator
 {
     public function __invoke(DOMDocument $document): ?DOMElement
     {
-        $soapNs = $document->namespaceURI ?? '';
+        $soapNs = $document->documentElement->namespaceURI ?? '';
         $xpath = Document::fromUnsafeDocument($document)->xpath(namespaces(['soap' => $soapNs]));
 
         return $xpath->query('//soap:Envelope/soap:Header')->first();

src/Xpath/EnvelopePreset.php

@@ -22,8 +22,8 @@ public function __construct(Document $document)
 
     public function __invoke(DOMXPath $xpath): DOMXPath
     {
-        namespaces(array_filter([
-            'soap', $this->document->locate(root_namespace_uri()),
+        return namespaces(array_filter([
+            'soap' => $this->document->locate(root_namespace_uri()),
             'application' => $this->document->locate(new BodyNamespaceLocator()),
         ]))($xpath);
     }

src/Xpath/WsdlPreset.php

@@ -21,8 +21,8 @@ public function __construct(Document $document)
 
     public function __invoke(DOMXPath $xpath): DOMXPath
     {
-        namespaces([
-            'wsdl', $this->document->locate(root_namespace_uri()),
+        return namespaces([
+            'wsdl' => $this->document->locate(root_namespace_uri()),
         ])($xpath);
     }
 }