Fix calculating avatar Base64

xmpp/handlers.go

@@ -258,11 +258,12 @@ func handleGetVcardTempIq(s xmpp.Sender, iq *stanza.IQ) {
 				buf := new(bytes.Buffer)
 				binval := base64.NewEncoder(base64.StdEncoding, buf)
 				_, err = io.Copy(binval, file)
+				binval.Close()
 				if err == nil {
 					vcard.Photo.Type.Text = "image/jpeg"
 					vcard.Photo.Binval.Text = buf.String()
 				} else {
-					log.Errorf("Error calculating hash: %v", path)
+					log.Errorf("Error calculating base64: %v", path)
 				}
 			} else if path != "" {
 				log.Errorf("Photo does not exist: %v", path)