From 64898ce288f5fcc54ebb4304a9b1f0aad76413bf Mon Sep 17 00:00:00 2001
From: johni0702 <me@johni0702.de>
Date: Tue, 24 Jan 2017 13:08:55 +0100
Subject: [PATCH] Fix NPE when saving recorded resource pack

---
 .../com/replaymod/recording/packet/ResourcePackRecorder.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/main/java/com/replaymod/recording/packet/ResourcePackRecorder.java b/src/main/java/com/replaymod/recording/packet/ResourcePackRecorder.java
index d4cb6c0f..ed5cfc7f 100644
--- a/src/main/java/com/replaymod/recording/packet/ResourcePackRecorder.java
+++ b/src/main/java/com/replaymod/recording/packet/ResourcePackRecorder.java
@@ -27,6 +27,7 @@ import javax.annotation.Nonnull;
 import java.io.File;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.util.HashMap;
 import java.util.Map;
 
 /**
@@ -53,6 +54,9 @@ public class ResourcePackRecorder {
             boolean doWrite = false; // Whether we are the first and have to write it
             synchronized (replayFile) { // Need to read, modify and write the resource pack index atomically
                 Map<Integer, String> index = replayFile.getResourcePackIndex();
+                if (index == null) {
+                    index = new HashMap<>();
+                }
                 if (!index.containsValue(hash)) {
                     // Hash is unknown, we have to write the resource pack ourselves
                     doWrite = true;