Close Structure Window when PlayerInteractEvent is cancelled

This is opened on the client, and so we send a CloseWindow packet

Spigot-Server-Patches/Close-Structure-Window-when-PlayerInteractEvent-is-c.patch

@@ -0,0 +1,21 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shane Freeder <theboyetronic@gmail.com>
+Date: Sun, 11 Feb 2018 10:43:46 +0000
+Subject: [PATCH] Close Structure Window when PlayerInteractEvent is cancelled
+
+This is opened on the client, and so we send a CloseWindow packet
+
+diff --git a/src/main/java/net/minecraft/server/PlayerInteractManager.java b/src/main/java/net/minecraft/server/PlayerInteractManager.java
+index 5ec7f5819..08b1dc0b2 100644
+--- a/src/main/java/net/minecraft/server/PlayerInteractManager.java
++++ b/src/main/java/net/minecraft/server/PlayerInteractManager.java
+@@ -0,0 +0,0 @@ public class PlayerInteractManager {
+                     ((EntityPlayer) entityhuman).playerConnection.sendPacket(new PacketPlayOutBlockChange(world, bottom ? blockposition.up() : blockposition.down()));
+                 } else if (blockdata.getBlock() instanceof BlockCake) {
+                     ((EntityPlayer) entityhuman).getBukkitEntity().sendHealthUpdate(); // SPIGOT-1341 - reset health for cake
++                } else if (blockdata.getBlock() instanceof BlockStructure) { // Paper - close Structure window when PIE is cancelled
++                    ((EntityPlayer) entityhuman).playerConnection.sendPacket(new PacketPlayOutCloseWindow()); // Paper - close Structure window when PIE is cancelled
+                 }
+                 ((EntityPlayer) entityhuman).getBukkitEntity().updateInventory(); // SPIGOT-2867
+                 enuminteractionresult = (event.useItemInHand() != Event.Result.ALLOW) ? EnumInteractionResult.SUCCESS : EnumInteractionResult.PASS;
+--