Fix null item in sendEquipmentChange (#9869)

patches/server/1040-Allow-null-itemstack-for-Player-sendEquipmentChange.patch

@@ -0,0 +1,19 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: David Scandurra <david.scandurra@check24.de>
+Date: Wed, 25 Oct 2023 20:36:25 +0200
+Subject: [PATCH] Allow null itemstack for Player#sendEquipmentChange
+
+
+diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+index 57229748ae446d70dbc3d71219d9f81f5c8f72b1..cce782907821b4f84fa865574a7483291369eac7 100644
+--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
++++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+@@ -1072,7 +1072,7 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
+ 
+     @Override
+     public void sendEquipmentChange(LivingEntity entity, EquipmentSlot slot, ItemStack item) {
+-        this.sendEquipmentChange(entity, Map.of(slot, item));
++        this.sendEquipmentChange(entity, java.util.Collections.singletonMap(slot, item)); // Paper - replace Map.of to allow null values
+     }
+ 
+     @Override