From 284a60e16d98d4ab272f4d49862d026dfbdd3be0 Mon Sep 17 00:00:00 2001
From: Martijn van Groningen <martijn.v.groningen@gmail.com>
Date: Thu, 21 May 2015 11:38:24 +0200
Subject: [PATCH] stats: fix npe during serialization

Original commit: elastic/x-pack-elasticsearch@3233836d0be05de9905b92d5d0325a2b6261f33e
---
 .../watcher/transport/actions/stats/WatcherStatsResponse.java   | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/main/java/org/elasticsearch/watcher/transport/actions/stats/WatcherStatsResponse.java b/src/main/java/org/elasticsearch/watcher/transport/actions/stats/WatcherStatsResponse.java
index 4b297d54a8b..2b3f3a0b2a0 100644
--- a/src/main/java/org/elasticsearch/watcher/transport/actions/stats/WatcherStatsResponse.java
+++ b/src/main/java/org/elasticsearch/watcher/transport/actions/stats/WatcherStatsResponse.java
@@ -17,6 +17,7 @@ import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.watcher.execution.WatchExecutionSnapshot;
 
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
 
@@ -121,6 +122,7 @@ public class WatcherStatsResponse extends ActionResponse implements ToXContent {
 
         if (in.readBoolean()) {
             int size = in.readVInt();
+            snapshots = new ArrayList<>(size);
             for (int i = 0; i < size; i++) {
                 snapshots.add(new WatchExecutionSnapshot(in));
             }