SDL_mixer: update vendored wavpack. (302b8)

From 302b8cf2e8acf8569718a8ea37fadd422365555d Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Wed, 10 Dec 2025 01:35:28 +0300
Subject: [PATCH] update vendored wavpack.

---
 external/wavpack | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/external/wavpack b/external/wavpack
index c9a53938..40fe043f 160000
--- a/external/wavpack
+++ b/external/wavpack
@@ -1 +1 @@
-Subproject commit c9a5393829483f0bb72c1f0bea9042e82c5586e0
+Subproject commit 40fe043ff767964c4c9439c24aee849ea867279d