SDL: Removed the SDL_PATH_DSP environment variable from the NetBSD and OSS audio driver

SDL Commits
1 
From a4dc130d7edea27d9ed3905be0139284da4a8281 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 3 Aug 2024 08:41:58 -0700
Subject: [PATCH] Removed the SDL_PATH_DSP environment variable from the NetBSD
 and OSS audio driver

The AUDIODEV environment variable is no longer used by other audio drivers, and can be used exclusively to specify the DSP audio device.
---
 docs/README-migration.md | 3 +++
 src/audio/SDL_audiodev.c | 5 +----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/docs/README-migration.md b/docs/README-migration.md
index 83667d2e0be88..6eca317d8ed2e 100644
--- a/docs/README-migration.md
+++ b/docs/README-migration.md
@@ -801,6 +801,9 @@ The following hints have been removed:
 * SDL_HINT_XINPUT_USE_OLD_JOYSTICK_MAPPING
 * SDL_HINT_AUDIO_DEVICE_APP_NAME - replaced by either using the appname param to SDL_SetAppMetadata() or setting SDL_PROP_APP_METADATA_NAME_STRING with SDL_SetAppMetadataProperty()
 
+The following environment variables have been renamed:
+* SDL_PATH_DSP => AUDIODEV
+
 The following environment variables have been removed:
 * SDL_AUDIO_ALSA_DEBUG - replaced by setting the hint SDL_HINT_LOGGING to "audio=debug"
 * SDL_DUMMYAUDIODELAY - replaced with the hint SDL_HINT_AUDIO_DUMMY_TIMESCALE which allows scaling the audio time rather than specifying an absolute delay.
diff --git a/src/audio/SDL_audiodev.c b/src/audio/SDL_audiodev.c
index 12a8385cf6346..d30f71c215ee2 100644
--- a/src/audio/SDL_audiodev.c
+++ b/src/audio/SDL_audiodev.c
@@ -87,10 +87,7 @@ static void SDL_EnumUnixAudioDevices_Internal(const SDL_bool recording, const SD
     }
 
     // Figure out what our audio device is
-    audiodev = SDL_getenv("SDL_PATH_DSP");
-    if (!audiodev) {
-        audiodev = SDL_getenv("AUDIODEV");
-    }
+    audiodev = SDL_getenv("AUDIODEV");
     if (!audiodev) {
         if (classic) {
             audiodev = SDL_PATH_DEV_AUDIO;