Merge pull request #370 from golang/fix

talksapp: fix build
diff --git a/talksapp/main.go b/talksapp/main.go
index f448a94..4a6c400 100644
--- a/talksapp/main.go
+++ b/talksapp/main.go
@@ -117,7 +117,7 @@
 func httpClient(r *http.Request) *http.Client {
 	c := appengine.NewContext(r)
 	return &http.Client{
-		Transport: &httputil.Transport{
+		Transport: &httputil.AuthTransport{
 			Token:        github.Token,
 			ClientID:     github.ClientID,
 			ClientSecret: github.ClientSecret,