From 67b0c9a70bd49e4b99df285a984171c158747c55 Mon Sep 17 00:00:00 2001
From: Ilya Kotov <51647531+trialuser02@users.noreply.github.com>
Date: Thu, 28 Nov 2024 21:46:36 +0300
Subject: [PATCH] Fix possible double free call

This fix prevents program from crashing when calling WildMidi_Init() -> WildMidi_Shutdown() several times.
---
 src/wildmidi_lib.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/wildmidi_lib.c b/src/wildmidi_lib.c
index 4f097f7f..a05d8d9e 100644
--- a/src/wildmidi_lib.c
+++ b/src/wildmidi_lib.c
@@ -2115,7 +2115,10 @@ WM_SYMBOL int WildMidi_Shutdown(void) {
 
     WM_Initialized = 0;
 
-    if (_WM_Global_ErrorS != NULL) free(_WM_Global_ErrorS);
+    if (_WM_Global_ErrorS != NULL) {
+        free(_WM_Global_ErrorS);
+        _WM_Global_ErrorS = NULL;
+    }
 
     _WM_BufferFile = _WM_BufferFileImpl;
     _WM_FreeBufferFile = _WM_FreeBufferFileImpl;