From 63fd1f9b032c92b330948cd66dfa0b677d982d03 Mon Sep 17 00:00:00 2001
From: Jesse Ezell <jesse.ezell@neudesic.com>
Date: Fri, 4 Apr 2014 09:42:17 -0700
Subject: [PATCH] use cast_ptr instead of ptr for travis go tip build

---
 diff.go | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/diff.go b/diff.go
index 09481b4..6f3f554 100644
--- a/diff.go
+++ b/diff.go
@@ -379,11 +379,11 @@ func (v *Repository) DiffTreeToTree(oldTree, newTree *Tree, opts *DiffOptions) (
 	var oldPtr, newPtr *C.git_tree
 
 	if oldTree != nil {
-		oldPtr = oldTree.gitObject.ptr
+		oldPtr = oldTree.cast_ptr
 	}
 
 	if newTree != nil {
-		newPtr = newTree.gitObject.ptr
+		newPtr = newTree.cast_ptr
 	}
 
 	cpathspec := C.git_strarray{}