internal: fix Error element definition

internal/elements.go

@@ -84,7 +84,7 @@ type Response struct {
 	Propstats           []Propstat `xml:"propstat,omitempty"`
 	ResponseDescription string     `xml:"responsedescription,omitempty"`
 	Status              *Status    `xml:"status,omitempty"`
-	Error               *RawXMLValue `xml:"error,omitempty"`
+	Error               *Error     `xml:"error,omitempty"`
 	Location            *Location  `xml:"location,omitempty"`
 }
 
@@ -162,7 +162,7 @@ type Propstat struct {
 	Prop                Prop     `xml:"prop"`
 	Status              Status   `xml:"status"`
 	ResponseDescription string   `xml:"responsedescription,omitempty"`
-	Error               *RawXMLValue `xml:"error,omitempty"`
+	Error               *Error   `xml:"error,omitempty"`
 }
 
 // https://tools.ietf.org/html/rfc4918#section-14.18
@@ -264,3 +264,9 @@ type GetLastModified struct {
 	XMLName      xml.Name `xml:"DAV: getlastmodified"`
 	LastModified Time     `xml:",chardata"`
 }
+
+// https://tools.ietf.org/html/rfc4918#section-14.5
+type Error struct {
+	XMLName xml.Name      `xml:"DAV: error"`
+	Raw     []RawXMLValue `xml:",any"`
+}

internal/server.go

@@ -98,7 +98,6 @@ func (h *Handler) handlePropfind(w http.ResponseWriter, r *http.Request) error {
 
 	depth := DepthInfinity
 	if s := r.Header.Get("Depth"); s != "" {
-		var err error
 		depth, err = ParseDepth(s)
 		if err != nil {
 			return &HTTPError{http.StatusBadRequest, err}