From 1f4f6c9832d83e7ebd65ccf4e95cef358b3512c6 Mon Sep 17 00:00:00 2001
From: S-H-GAMELINKS <gamelinks007@gmail.com>
Date: Tue, 15 Nov 2022 13:24:08 +0900
Subject: Using UNDEF_P macro

---
 process.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'process.c')

diff --git a/process.c b/process.c
index d95b717960..dabe9320f2 100644
--- a/process.c
+++ b/process.c
@@ -1332,7 +1332,7 @@ rb_process_status_wait(rb_pid_t pid, int flags)
     if (!(flags & WNOHANG)) {
         VALUE scheduler = rb_fiber_scheduler_current();
         VALUE result = rb_fiber_scheduler_process_wait(scheduler, pid, flags);
-        if (result != Qundef) return result;
+        if (!UNDEF_P(result)) return result;
     }
 
     struct waitpid_state waitpid_state;
-- 
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