Paper/patches/server/0838-Fix-NPE-for-BlockDataMeta-getBlockData.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 27 Mar 2022 16:00:28 -0700
Subject: [PATCH] Fix NPE for BlockDataMeta#getBlockData


diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index 34f27913dc80915135bb476447dcbff9b32e302c..58c1d07f41fc382b23df17739090f5031fd41aad 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -1094,7 +1094,10 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
 
     @Override
     public BlockData getBlockData(Material material) {
-        return CraftBlockData.fromData(BlockItem.getBlockState(CraftMagicNumbers.getBlock(material).defaultBlockState(), blockData));
+        // Paper start - fix NPE if this.blockData is null
+        final net.minecraft.world.level.block.state.BlockState defaultBlockState = CraftMagicNumbers.getBlock(material).defaultBlockState();
+        return CraftBlockData.fromData(this.blockData == null ? defaultBlockState : BlockItem.getBlockState(defaultBlockState, blockData));
+        // Paper end
     }
 
     @Override