#755: Fix NPE when calling getInventory() for virtual EnderChests

nms-patches/InventoryEnderChest.patch

@@ -18,7 +18,7 @@
 +
 +    @Override
 +    public Location getLocation() {
-+        return new Location(this.a.getWorld().getWorld(), this.a.getPosition().getX(), this.a.getPosition().getY(), this.a.getPosition().getZ());
++        return this.a != null ? new Location(this.a.getWorld().getWorld(), this.a.getPosition().getX(), this.a.getPosition().getY(), this.a.getPosition().getZ()) : null;
 +    }
  
 -    public InventoryEnderChest() {