From 1f373501613ead2dec7c1b02434e656ff63862b9 Mon Sep 17 00:00:00 2001
From: Mike Hearn <mike@plan99.net>
Date: Sun, 22 Dec 2013 19:13:41 +0100
Subject: [PATCH] Transaction: clear a couple of static analysis warnings.

---
 core/src/main/java/com/google/bitcoin/core/Transaction.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/core/src/main/java/com/google/bitcoin/core/Transaction.java b/core/src/main/java/com/google/bitcoin/core/Transaction.java
index 8d3656ef..5311c7b2 100644
--- a/core/src/main/java/com/google/bitcoin/core/Transaction.java
+++ b/core/src/main/java/com/google/bitcoin/core/Transaction.java
@@ -584,9 +584,9 @@ public class Transaction extends ChildMessage implements Serializable {
      * A human readable version of the transaction useful for debugging. The format is not guaranteed to be stable.
      * @param chain If provided, will be used to estimate lock times (if set). Can be null.
      */
-    public String toString(AbstractBlockChain chain) {
+    public String toString(@Nullable AbstractBlockChain chain) {
         // Basic info about the tx.
-        StringBuffer s = new StringBuffer();
+        StringBuilder s = new StringBuilder();
         s.append(String.format("  %s: %s%n", getHashAsString(), getConfidence()));
         if (isTimeLocked()) {
             String time;