SDL_mixer: Fixed Windows build

SDL Commits
1 
From 3940e274fd3d1fdc4a38ed6cf95e954397061171 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 25 Jul 2025 13:32:28 -0700
Subject: [PATCH] Fixed Windows build

---
 src/SDL_mixer_internal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SDL_mixer_internal.h b/src/SDL_mixer_internal.h
index 8bc82618..4c298701 100644
--- a/src/SDL_mixer_internal.h
+++ b/src/SDL_mixer_internal.h
@@ -136,7 +136,7 @@ struct MIX_Audio
 
 struct MIX_Track
 {
-    float position3d[4] SDL_ALIGNED(16);   // we only need the X, Y, and Z coords, but the 4th element makes this SIMD-friendly.
+    float SDL_ALIGNED(16) position3d[4];   // we only need the X, Y, and Z coords, but the 4th element makes this SIMD-friendly.
     MIX_SpatializationMode spatialization_mode;
     float spatialization_panning[2];
     int spatialization_speakers[2];