Fix a duplicate alive entity on second world

Spigot-Server-Patches/Fix-a-duplicate-alive-entity-on-second-world.patch

@@ -0,0 +1,28 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shane Freeder <theboyetronic@gmail.com>
+Date: Fri, 17 Mar 2017 01:45:15 +0000
+Subject: [PATCH] Fix a duplicate alive entity on second world
+
+
+diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
+index 0e1d9817..4cabdd7a 100644
+--- a/src/main/java/net/minecraft/server/Entity.java
++++ b/src/main/java/net/minecraft/server/Entity.java
+@@ -0,0 +0,0 @@ public abstract class Entity implements ICommandListener {
+             // CraftBukkit end */
+             // CraftBukkit start - Ensure chunks are loaded in case TravelAgent is not used which would initially cause chunks to load during find/create
+             // minecraftserver.getPlayerList().changeWorld(this, j, worldserver, worldserver1);
++            this.dead = true; // Paper - Mark entity as dead before we actually move it to the new world
+             worldserver1.getMinecraftServer().getPlayerList().repositionEntity(this, exit, portal);
+             // worldserver.entityJoinedWorld(this, false); // Handled in repositionEntity
+             // CraftBukkit end
+@@ -0,0 +0,0 @@ public abstract class Entity implements ICommandListener {
+                 // CraftBukkit end
+             }
+ 
+-            this.dead = true;
++            //this.dead = true; // Paper - Moved this up to ensure that the entity is dead when it's placed on the new world
+             this.world.methodProfiler.b();
+             worldserver.m();
+             worldserver1.m();
+--