SDL: SDL_n3dsaudio.c: separate mixer locks from audio device locks (6efe9)

From 6efe957159d6e06db9d9fb9aee6065e5e1cd3939 Mon Sep 17 00:00:00 2001
From: ds-sloth <[EMAIL REDACTED]>
Date: Tue, 24 Oct 2023 19:06:49 -0400
Subject: [PATCH] SDL_n3dsaudio.c: separate mixer locks from audio device locks

(cherry picked from commit 62266dbd4fa79090025317a71473eb764b2e1abe)

(SDL3 audio backends don't have the LockDevice interfaces, so this just
ended up being a comment.)
---
 src/audio/n3ds/SDL_n3dsaudio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/audio/n3ds/SDL_n3dsaudio.c b/src/audio/n3ds/SDL_n3dsaudio.c
index efc26542aeb8..31be34c3f169 100644
--- a/src/audio/n3ds/SDL_n3dsaudio.c
+++ b/src/audio/n3ds/SDL_n3dsaudio.c
@@ -32,6 +32,7 @@
 static dspHookCookie dsp_hook;
 static SDL_AudioDevice *audio_device;
 
+// fully local functions related to the wavebufs / DSP, not the same as the `device->lock` SDL_Mutex!
 static SDL_INLINE void contextLock(SDL_AudioDevice *device)
 {
     LightLock_Lock(&device->hidden->lock);