SDL_mixer: native_midi_macosx.c: fixed the C90 warning

SDL Commits
1 
From f9d062f40d6cebc601ea457f823e78b6175a55f1 Mon Sep 17 00:00:00 2001
From: Wohlstand <[EMAIL REDACTED]>
Date: Thu, 18 Mar 2021 01:11:35 +0300
Subject: [PATCH] native_midi_macosx.c: fixed the C90 warning

---
 src/codecs/native_midi/native_midi_macosx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/codecs/native_midi/native_midi_macosx.c b/src/codecs/native_midi/native_midi_macosx.c
index 8d8df8c..cda2190 100644
--- a/src/codecs/native_midi/native_midi_macosx.c
+++ b/src/codecs/native_midi/native_midi_macosx.c
@@ -154,8 +154,8 @@ macosx_load_soundfont(const char *path, void *data)
                                        kAudioUnitScope_Global, 0,
                                        &ctx->default_url, sizeof(CFURLRef));
         if (err != noErr) {
-            // uh-oh, this might leave the audio unit in an unusable state
-            // (e.g. if the soundfont was an incompatible file type)
+            /* uh-oh, this might leave the audio unit in an unusable state
+               (e.g. if the soundfont was an incompatible file type) */
         }
         return SDL_FALSE;
     }