msxml3/tests: Actually test the return values (PVS-Studio).

dlls/msxml3/tests/domdoc.c

@@ -11085,6 +11085,7 @@ static void test_xmlns_attribute(void)
     V_VT(&v) = VT_BSTR;
     V_BSTR(&v) = _bstr_("urn:schemas-microsoft-com:datatypes");
     hr = IXMLDOMAttribute_put_nodeValue(pAttribute, v);
+    ok(hr == S_OK, "ret %08x\n", hr );
 
     hr = IXMLDOMElement_setAttributeNode(root, pAttribute, NULL);
     ok(hr == S_OK, "ret %08x\n", hr );

dlls/msxml3/tests/schema.c

@@ -1292,6 +1292,7 @@ static void test_XDR_datatypes(void)
 
         VariantClear(&type);
         hr = IXMLDOMNode_get_nodeTypedValue(node, &type);
+        EXPECT_HR(hr, S_OK);
         ok(V_VT(&type) == VT_BSTR, "got variant type %i\n", V_VT(&v));
         VariantClear(&type);
         IXMLDOMNode_Release(node);