Paper/patches/server/0528-Fix-CME-on-adding-a-passenger-in-CreatureSpawnEvent.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: jmp <jasonpenilla2@me.com>
Date: Sun, 4 Oct 2020 19:55:25 -0700
Subject: [PATCH] Fix CME on adding a passenger in CreatureSpawnEvent


diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 73b19cfa45225d838e5e7fd6a0903ab9f13a5859..2e2effe72235bda3c9ef985840d4322551625ed8 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -3413,7 +3413,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, n
     }
 
     private Stream<Entity> getIndirectPassengersStream() {
-        return this.passengers.stream().flatMap(Entity::getSelfAndPassengers);
+        return ImmutableList.copyOf(this.passengers).stream().flatMap(Entity::getSelfAndPassengers); // Paper
     }
 
     @Override