SDL: Fixed mis-cherry-pick

SDL Commits
1 
From 28472738857ff194b5b6b8778a1975cb605210a2 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 1 Feb 2025 11:03:33 -0800
Subject: [PATCH] Fixed mis-cherry-pick

---
 test/testatomic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/testatomic.c b/test/testatomic.c
index e8d43d1ef7bc1..fd80fd6ef01fe 100644
--- a/test/testatomic.c
+++ b/test/testatomic.c
@@ -131,7 +131,7 @@ static int SDLCALL adder(void *junk)
 static void runAdder(void)
 {
     Uint32 start, end;
-    int T = NThreads;
+    int i;
     SDL_Thread *threads[NThreads];
 
     start = SDL_GetTicks();