SDL_mixer: Fix double clamping of precached data

SDL Commits
1 
From 55a39d04771573568aacbc256e26b5e6cb069a67 Mon Sep 17 00:00:00 2001
From: Alexander Batalov <[EMAIL REDACTED]>
Date: Tue, 29 Jul 2025 19:56:08 +0300
Subject: [PATCH] Fix double clamping of precached data

---
 src/SDL_mixer.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/SDL_mixer.c b/src/SDL_mixer.c
index 4390f575..935e05c1 100644
--- a/src/SDL_mixer.c
+++ b/src/SDL_mixer.c
@@ -1067,6 +1067,8 @@ MIX_Audio *MIX_LoadAudioWithProperties(SDL_PropertiesID props)  // lets you spec
         if ((audio->precache = SDL_LoadFile_IO(io, &audio->precachelen, false)) == NULL) {
             goto failed;
         }
+        audio->clamp_offset = -1;   // precache is already clamped
+        audio->clamp_length = -1;
     }
 
     if (ioclamp) {