TileEntityLootable can call processRefill with a null player

Seems specific to EntityMinecartChest
Fixes GH-290

Spigot-Server-Patches/0148-LootTable-API-Replenishable-Lootables-Feature.patch

@@ -1,4 +1,4 @@
-From 0f72c89ba8ab6abcf9d92154c315ddfdf2a54bce Mon Sep 17 00:00:00 2001
+From 3cae4941492db646e4a46f31da7b72aa878fcf01 Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Sun, 1 May 2016 21:19:14 -0400
 Subject: [PATCH] LootTable API & Replenishable Lootables Feature
@@ -231,10 +231,10 @@ index 0000000..6680976
 +}
 diff --git a/src/main/java/com/destroystokyo/paper/loottable/CraftLootableInventoryData.java b/src/main/java/com/destroystokyo/paper/loottable/CraftLootableInventoryData.java
 new file mode 100644
-index 0000000..c3d3cb9
+index 0000000..01c2713
 --- /dev/null
 +++ b/src/main/java/com/destroystokyo/paper/loottable/CraftLootableInventoryData.java
-@@ -0,0 +1,180 @@
+@@ -0,0 +1,182 @@
 +package com.destroystokyo.paper.loottable;
 +
 +import com.destroystokyo.paper.PaperWorldConfig;
@@ -322,7 +322,7 @@ index 0000000..c3d3cb9
 +        }
 +        return event.callEvent();
 +    }
-+    public void processRefill(EntityHuman player) {
++    public void processRefill(@Nullable EntityHuman player) {
 +        this.lastFill = System.currentTimeMillis();
 +        final PaperWorldConfig paperConfig = this.lootable.getNMSWorld().paperConfig;
 +        if (paperConfig.autoReplenishLootables) {
@@ -333,7 +333,9 @@ index 0000000..c3d3cb9
 +            if (paperConfig.changeLootTableSeedOnFill) {
 +                this.lootable.setLootTableSeed(0);
 +            }
-+            this.setPlayerLootedState(player.getUniqueID(), true);
++            if (player != null) { // This means that numRefills can be incremented without a player being in the lootedPlayers list - Seems to be EntityMinecartChest specific
++                this.setPlayerLootedState(player.getUniqueID(), true);
++            }
 +        } else {
 +            this.lootable.clearLootTable();
 +        }
@@ -727,5 +729,5 @@ index e9963e2..acb4dee 100644
  
      CraftMinecartHopper(CraftServer server, EntityMinecartHopper entity) {
 -- 
-2.8.2
+2.8.2.windows.1