From e5e8eec2cf87a87cd6ba83be3beee2991f7bcf31 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Sat, 3 Aug 2019 12:55:20 +1000
Subject: [PATCH] SPIGOT-5241: setAttributeModifiers does not work on untouched
 stack

---
 .../java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
index d13a9f7293..e1d9952d39 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java
@@ -999,8 +999,11 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta {
             this.attributeModifiers = HashMultimap.create();
             return;
         }
-        Iterator<Map.Entry<Attribute, AttributeModifier>> iterator = attributeModifiers.entries().iterator();
+
+        checkAttributeList();
         this.attributeModifiers.clear();
+
+        Iterator<Map.Entry<Attribute, AttributeModifier>> iterator = attributeModifiers.entries().iterator();
         while (iterator.hasNext()) {
             Map.Entry<Attribute, AttributeModifier> next = iterator.next();