From db97147724cb5f8ef1c960f86f379195a462e3df Mon Sep 17 00:00:00 2001
From: BlackHole <black-hole@live.com>
Date: Mon, 22 Jul 2019 23:41:39 +0200
Subject: [PATCH] SPIGOT-5199: Fix NPE if setting the book of the ItemMeta of a
 lectern

---
 nms-patches/TileEntityLectern.patch | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/nms-patches/TileEntityLectern.patch b/nms-patches/TileEntityLectern.patch
index d670e06b34..ee37d5fb56 100644
--- a/nms-patches/TileEntityLectern.patch
+++ b/nms-patches/TileEntityLectern.patch
@@ -66,7 +66,7 @@
          @Override
          public int getSize() {
              return 1;
-@@ -49,11 +102,18 @@
+@@ -49,11 +102,20 @@
          }
  
          @Override
@@ -75,7 +75,9 @@
 +        public void setItem(int i, ItemStack itemstack) {
 +            if (i == 0) {
 +                TileEntityLectern.this.setBook(itemstack);
-+                BlockLectern.setHasBook(TileEntityLectern.this.getWorld(), TileEntityLectern.this.getPosition(), TileEntityLectern.this.getBlock(), TileEntityLectern.this.hasBook());
++                if (TileEntityLectern.this.getWorld() != null) {
++                    BlockLectern.setHasBook(TileEntityLectern.this.getWorld(), TileEntityLectern.this.getPosition(), TileEntityLectern.this.getBlock(), TileEntityLectern.this.hasBook());
++                }
 +            }
 +        }
 +        // CraftBukkit end
@@ -87,7 +89,7 @@
          }
  
          @Override
-@@ -158,6 +218,32 @@
+@@ -158,6 +220,32 @@
          return itemstack;
      }
  
@@ -120,7 +122,7 @@
      private CommandListenerWrapper a(@Nullable EntityHuman entityhuman) {
          String s;
          Object object;
-@@ -172,7 +258,8 @@
+@@ -172,7 +260,8 @@
  
          Vec3D vec3d = new Vec3D((double) this.position.getX() + 0.5D, (double) this.position.getY() + 0.5D, (double) this.position.getZ() + 0.5D);
  
@@ -130,7 +132,7 @@
      }
  
      @Override
-@@ -211,7 +298,7 @@
+@@ -211,7 +300,7 @@
  
      @Override
      public Container createMenu(int i, PlayerInventory playerinventory, EntityHuman entityhuman) {