From 22552265cefc80b400ff64156155f53a5d5751e6 Mon Sep 17 00:00:00 2001
From: Richard Lehane <richard.lehane@gmail.com>
Date: Wed, 22 Apr 2015 14:27:21 +1000
Subject: [PATCH] fix bad dir structure err

---
 directory.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/directory.go b/directory.go
index 0479bd1..576015c 100644
--- a/directory.go
+++ b/directory.go
@@ -233,10 +233,10 @@ func fixName(f *File) {
 func (r *Reader) traverse() error {
 	r.indexes = make([]int, len(r.File))
 	var idx int
-	var recurse func(i int, path []string)
+	var recurse func(int, []string)
 	var err error
 	recurse = func(i int, path []string) {
-		if i < 0 || i >= len(r.File) || idx >= len(r.indexes) {
+		if i < 0 || i >= len(r.File) {
 			err = ErrBadDir
 			return
 		}
@@ -244,6 +244,10 @@ func (r *Reader) traverse() error {
 		if file.leftSibID != noStream {
 			recurse(int(file.leftSibID), path)
 		}
+		if idx >= len(r.indexes) {
+			err = ErrBadDir
+			return
+		}
 		r.indexes[idx] = i
 		file.Path = path
 		idx++