From 1a79a7e346017f7dd2a8508d98b2bd357eb7e472 Mon Sep 17 00:00:00 2001
From: Menghan Li <menghanl@google.com>
Date: Tue, 27 Sep 2016 11:14:33 -0700
Subject: [PATCH] Use creds.Clone in balancer.start

---
 clientconn.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/clientconn.go b/clientconn.go
index e18d9659..11dce44f 100644
--- a/clientconn.go
+++ b/clientconn.go
@@ -288,8 +288,12 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *
 			// Connect to target directly if balancer is nil.
 			addrs = append(addrs, Address{Addr: target})
 		} else {
+			var credsClone credentials.TransportCredentials
+			if creds != nil {
+				credsClone = creds.Clone()
+			}
 			config := BalancerConfig{
-				DialCreds: creds,
+				DialCreds: credsClone,
 			}
 			if err := cc.dopts.balancer.Start(target, config); err != nil {
 				waitC <- err