From e9f972d6744d66460a78a868d298c7f543533073 Mon Sep 17 00:00:00 2001
From: md_5 <git@md-5.net>
Date: Sat, 19 Mar 2022 09:59:56 +1100
Subject: [PATCH] Improve CreativeCategory conversion

---
 .../craftbukkit/inventory/CraftCreativeCategory.java     | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftCreativeCategory.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftCreativeCategory.java
index 5fc078b2c..55ed932d9 100644
--- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftCreativeCategory.java
+++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftCreativeCategory.java
@@ -20,10 +20,15 @@ public final class CraftCreativeCategory {
             .build();
 
     public static CreativeCategory fromNMS(CreativeModeTab tab) {
-        if (!NMS_TO_BUKKIT.containsKey(tab)) {
+        if (tab == null) {
+            return null;
+        }
+
+        CreativeCategory bukkit = NMS_TO_BUKKIT.get(tab);
+        if (bukkit == null) {
             throw new UnsupportedOperationException("Item is not present in any known CreativeModeTab. This is a bug.");
         }
 
-        return (tab != null) ? NMS_TO_BUKKIT.get(tab) : null;
+        return bukkit;
     }
 }