Feat: cleaned up marshalutil

packages/binary/marshalutil/generic_parser.go

-package marshalutil
-
-type GenericParser func(data []byte) (result interface{}, err error, consumedBytes int)

packages/binary/marshalutil/marshalutil.go

@@ -38,10 +38,11 @@ func New(args ...interface{}) *MarshalUtil {
 	}
 }
 
-func (util *MarshalUtil) Parse(parser GenericParser) (result interface{}, err error) {
+func (util *MarshalUtil) Parse(parser func(data []byte) (result interface{}, err error, consumedBytes int)) (result interface{}, err error) {
 	result, err, readBytes := parser(util.bytes[util.readOffset:])
-
-	util.ReadSeek(util.readOffset + readBytes)
+	if err != nil {
+		util.ReadSeek(util.readOffset + readBytes)
+	}
 
 	return
 }