SDL_mixer: Fix memory leak in ReadMIDIFile (f6e90)

From f6e9005efb2fff83dea2045686593a0960e410fd Mon Sep 17 00:00:00 2001
From: zhailiangliang <[EMAIL REDACTED]>
Date: Thu, 22 Sep 2022 14:21:09 +0800
Subject: [PATCH] Fix memory leak in ReadMIDIFile

(cherry-picked from commit c9f0946a783293d12178ce86773dd6f8f1a08b1c)
---
 native_midi/native_midi_common.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/native_midi/native_midi_common.c b/native_midi/native_midi_common.c
index fa115cc1..8b005d79 100644
--- a/native_midi/native_midi_common.c
+++ b/native_midi/native_midi_common.c
@@ -349,6 +349,7 @@ static int ReadMIDIFile(MIDIFile *mididata, SDL_RWops *rw)
 			free(mididata->track[i].data);
 	}
 
+	free(mididata->track);
 	return 0;
 }