From 95044d27cef548f801eddba1f2b7fe74399fc130 Mon Sep 17 00:00:00 2001
From: CalDescent <caldescent@protonmail.com>
Date: Sun, 15 Aug 2021 10:32:37 +0100
Subject: [PATCH] Fixed NPE caused by having an arbitrary transaction with no
 chunks (which is expected if the total data size is less than the chunk
 size).

---
 src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java b/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java
index 55aafc60..434c626b 100644
--- a/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java
+++ b/src/main/java/org/qortal/arbitrary/ArbitraryDataFile.java
@@ -394,6 +394,9 @@ public class ArbitraryDataFile {
     }
 
     public boolean allChunksExist(byte[] chunks) {
+        if (chunks == null) {
+            return true;
+        }
         ByteBuffer byteBuffer = ByteBuffer.wrap(chunks);
         while (byteBuffer.remaining() >= TransactionTransformer.SHA256_LENGTH) {
             byte[] chunkHash = new byte[TransactionTransformer.SHA256_LENGTH];