From 77cbdc613488c85dda23c85b5fc41f167ebdf7d2 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Wed, 6 Mar 2019 19:45:39 +1100
Subject: [PATCH] SPIGOT-4651: MerchantRecipe.setIngredients() allows more than
 2 ingredients

---
 src/main/java/org/bukkit/inventory/MerchantRecipe.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/org/bukkit/inventory/MerchantRecipe.java b/src/main/java/org/bukkit/inventory/MerchantRecipe.java
index 9a03d20e..54e29d54 100644
--- a/src/main/java/org/bukkit/inventory/MerchantRecipe.java
+++ b/src/main/java/org/bukkit/inventory/MerchantRecipe.java
@@ -43,7 +43,7 @@ public class MerchantRecipe implements Recipe {
     }
 
     public void addIngredient(ItemStack item) {
-        Preconditions.checkState(ingredients.size() < 2, "MerchantRecipe can only have 2 ingredients");
+        Preconditions.checkState(ingredients.size() < 2, "MerchantRecipe can only have maximum 2 ingredients");
         ingredients.add(item.clone());
     }
 
@@ -52,6 +52,7 @@ public class MerchantRecipe implements Recipe {
     }
 
     public void setIngredients(List<ItemStack> ingredients) {
+        Preconditions.checkState(ingredients.size() <= 2, "MerchantRecipe can only have maximum 2 ingredients");
         this.ingredients = new ArrayList<ItemStack>();
         for (ItemStack item : ingredients) {
             this.ingredients.add(item.clone());