Merge pull request #766 from versity/ben/xml_response

fix: add XMLName to InitiateMultipartUploadResult for consistency

s3response/s3response.go

@@ -310,6 +310,7 @@ type OwnershipControls struct {
 }
 
 type InitiateMultipartUploadResult struct {
+	XMLName  xml.Name `xml:"http://s3.amazonaws.com/doc/2006-03-01/ InitiateMultipartUploadResult" json:"-"`
 	Bucket   string
 	Key      string
 	UploadId string