From 71436daebe27526f04f6ed1e73d4cba1ecbf8484 Mon Sep 17 00:00:00 2001
From: Andrew Tunnell-Jones <andrew@tj.id.au>
Date: Wed, 12 Nov 2014 07:56:21 +0000
Subject: [PATCH] Make TestDynamicUpdateZeroRdataUnpack pass

Straight up: took a guess and the tests pass.
---
 msg.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/msg.go b/msg.go
index 2ae95fcb..ff5e711b 100644
--- a/msg.go
+++ b/msg.go
@@ -897,6 +897,9 @@ func unpackStructValue(val reflect.Value, msg []byte, off int) (off1 int, err er
 	var lenrd int
 	lenmsg := len(msg)
 	for i := 0; i < val.NumField(); i++ {
+		if lenrd != 0 && lenrd == off {
+			break
+		}
 		if off > lenmsg {
 			return lenmsg, &Error{"bad offset unpacking"}
 		}