From 27f50a66124054518d5febe984bccad02ee0846b Mon Sep 17 00:00:00 2001
From: Miguel Arroz <750683+arroz@users.noreply.github.com>
Date: Thu, 2 Sep 2021 18:59:19 -0700
Subject: #6028: Check if `threadstate->error_t.message` is not
 `git_buf__initbuf` before freeing.

This follows the same principle as `buffer.c` where the same check is done before freeing the buffer. It fixes the crash described in #6028.
---
 src/threadstate.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/threadstate.c b/src/threadstate.c
index 6031e8280..e2c08975f 100644
--- a/src/threadstate.c
+++ b/src/threadstate.c
@@ -36,7 +36,8 @@ static void threadstate_dispose(git_threadstate *threadstate)
 	if (!threadstate)
 		return;
 
-	git__free(threadstate->error_t.message);
+    if (threadstate->error_t.message != git_buf__initbuf)
+        git__free(threadstate->error_t.message);
 	threadstate->error_t.message = NULL;
 }
 
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