sdl12-compat: added FIXME about respecting 1.2 env vars for defining audio format

SDL Commits
1 
From 9c285f238bcca35957bcb339d89429553ba91656 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sat, 1 May 2021 14:01:02 +0300
Subject: [PATCH] added FIXME about respecting 1.2 env vars for defining audio
 format

hand-picked from the cdrom compat patch of icculus.
---
 src/SDL12_compat.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/SDL12_compat.c b/src/SDL12_compat.c
index 93eb1a2..e492b64 100644
--- a/src/SDL12_compat.c
+++ b/src/SDL12_compat.c
@@ -5095,7 +5095,7 @@ SDL_OpenAudio(SDL_AudioSpec *want, SDL_AudioSpec *obtained)
     AudioCallbackWrapperData *data;
     int retval;
 
-    /* SDL2 uses a NULL callback to mean "we play to use SDL_QueueAudio()" */
+    /* SDL2 uses a NULL callback to mean "we plan to use SDL_QueueAudio()" */
     if (want && (want->callback == NULL)) {
         return SDL20_SetError("Callback can't be NULL");
     }
@@ -5110,6 +5110,7 @@ SDL_OpenAudio(SDL_AudioSpec *want, SDL_AudioSpec *obtained)
     want->userdata = data;
     /* to avoid receiving a possible incompatible configuration
      * from SDL2, always pass NULL as the 'obtained' pointer.  */
+    FIXME("Respect 1.2 environment variables for defining format here.");
     if (!want->format) {
         want->format = AUDIO_S16SYS;
     }