From b024f6e5712da45f36238105eb1b1f4fd123e80a Mon Sep 17 00:00:00 2001
From: Andreas Schildbach <andreas@schildbach.de>
Date: Thu, 3 Mar 2016 15:03:48 +0100
Subject: [PATCH] KeyChainGroup: Small optimization in toString().

---
 core/src/main/java/org/bitcoinj/wallet/KeyChainGroup.java | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/core/src/main/java/org/bitcoinj/wallet/KeyChainGroup.java b/core/src/main/java/org/bitcoinj/wallet/KeyChainGroup.java
index ea7d0e97..e2ac6ba6 100644
--- a/core/src/main/java/org/bitcoinj/wallet/KeyChainGroup.java
+++ b/core/src/main/java/org/bitcoinj/wallet/KeyChainGroup.java
@@ -795,11 +795,8 @@ public class KeyChainGroup implements KeyBag {
             for (ECKey key : keys)
                 key.formatKeyWithAddress(includePrivateKeys, builder, params);
         }
-        List<String> chainStrs = Lists.newLinkedList();
-        for (DeterministicKeyChain chain : chains) {
-            chainStrs.add(chain.toString(includePrivateKeys, params));
-        }
-        builder.append(Joiner.on('\n').join(chainStrs));
+        for (DeterministicKeyChain chain : chains)
+            builder.append(chain.toString(includePrivateKeys, params)).append('\n');
         return builder.toString();
     }