SDL: Audio 6.1 should be allowed now (see #4974)

From b6e8651ae9401ef7439d62b599fbe41867158e25 Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Sat, 20 Nov 2021 15:31:21 +0100
Subject: [PATCH] Audio 6.1 should be allowed now (see #4974)

---
 src/audio/SDL_audio.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/audio/SDL_audio.c b/src/audio/SDL_audio.c
index 5d8697655dc..fd8e6da8b51 100644
--- a/src/audio/SDL_audio.c
+++ b/src/audio/SDL_audio.c
@@ -1268,6 +1268,7 @@ prepare_audiospec(const SDL_AudioSpec * orig, SDL_AudioSpec * prepared)
     case 2:                    /* Stereo */
     case 4:                    /* Quadrophonic */
     case 6:                    /* 5.1 surround */
+    case 7:                    /* 6.1 surround */
     case 8:                    /* 7.1 surround */
         break;
     default: