From 470ac022f22a66b437a950c6eb22ac255ddbc7fd Mon Sep 17 00:00:00 2001
From: Alexandre Julliard <julliard@winehq.org>
Date: Fri, 19 Nov 2021 15:36:15 +0100
Subject: [PATCH] ntdll: Fix a compiler warning on macOS.

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
---
 dlls/ntdll/unix/sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/ntdll/unix/sync.c b/dlls/ntdll/unix/sync.c
index 0065f265e42..7f71b737045 100644
--- a/dlls/ntdll/unix/sync.c
+++ b/dlls/ntdll/unix/sync.c
@@ -2329,7 +2329,7 @@ static union tid_alert_entry *get_tid_alert_entry( HANDLE tid )
 
         if (semaphore_create( mach_task_self(), &sem, SYNC_POLICY_FIFO, 0 ))
             return NULL;
-        if (InterlockedCompareExchange( (int *)&entry->sem, sem, NULL ))
+        if (InterlockedCompareExchange( (int *)&entry->sem, sem, 0 ))
             semaphore_destroy( mach_task_self(), sem );
     }
 #else