From 30482cce84f5f63c341f9f76db856fa38a33c72a Mon Sep 17 00:00:00 2001
From: Charles Oliver Nutter <headius@headius.com>
Date: Fri, 25 Oct 2024 15:58:19 -0500
Subject: [PATCH] Check null in a way that ErrorProne doesn't hate

---
 core/src/main/java/org/jruby/RubyThread.java | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/org/jruby/RubyThread.java b/core/src/main/java/org/jruby/RubyThread.java
index 2f079f210cb..3caff7914cc 100644
--- a/core/src/main/java/org/jruby/RubyThread.java
+++ b/core/src/main/java/org/jruby/RubyThread.java
@@ -42,6 +42,7 @@
 import java.nio.channels.SelectionKey;
 import java.nio.channels.Selector;
 import java.util.Iterator;
+import java.util.Objects;
 import java.util.Queue;
 import java.util.Vector;
 import java.util.WeakHashMap;
@@ -2579,7 +2580,7 @@ public static <StateType> IRubyObject uninterruptible(ThreadContext context, Sta
     public IRubyObject setFiberScheduler(IRubyObject scheduler) {
 //        VM_ASSERT(ruby_thread_has_gvl_p());
 
-        scheduler.getClass(); // !null
+        Objects.requireNonNull(scheduler);
 
         if (scheduler != null && !scheduler.isNil()) {
             FiberScheduler.verifyInterface(scheduler);