From 6c6f66914d9b7c879dd1d043e8d5e0323a4c9caa Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Wed, 10 Jun 2020 07:30:36 -0700
Subject: [PATCH] VIDEO: Explicitly initialize and cleanup SDL Audio subsystem

As mentioned in #873, there didn't appear to be a problem at runtime,
but the formal definition suggests SDL_InitSubSystem and its cleanup
should be called.  It is likely that, as a vestige of SDL 1.2,
SDL_OpenAudio is doing this under the covers.  No harm adding it.
---
 sim_video.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sim_video.c b/sim_video.c
index 24d1a78d..683478a6 100644
--- a/sim_video.c
+++ b/sim_video.c
@@ -2194,6 +2194,7 @@ if (!vid_beep_data) {
     int i;
     SDL_AudioSpec desiredSpec;
 
+    SDL_InitSubSystem (SDL_INIT_AUDIO);
     memset (&desiredSpec, 0, sizeof(desiredSpec));
     desiredSpec.freq = SAMPLE_FREQUENCY;
     desiredSpec.format = AUDIO_S16SYS;
@@ -2216,6 +2217,7 @@ static void vid_beep_cleanup (void)
 SDL_CloseAudio();
 free (vid_beep_data);
 vid_beep_data = NULL;
+SDL_QuitSubSystem (SDL_INIT_AUDIO);
 }
 
 void vid_beep_event (void)