xdr: fix dumb mistake

devices/devices_xdr.go

@@ -20,7 +20,7 @@ func init() {
 	for _, file := range files {
 		dev := new(DeviceDef)
 		data, _ := df.ReadFile("xdr/" + file.Name())
-		_, err xdr.Unmarshal(bytes.NewReader(data), dev)
+		_, err := xdr.Unmarshal(bytes.NewReader(data), dev)
 		if err != nil {
 			panic(err.Error())
 		}