From f6bf4ab16437ab0aec6202d5f2bb6daef35adec4 Mon Sep 17 00:00:00 2001
From: Chris Desjardins <chris@arch-embedded.com>
Date: Wed, 8 Feb 2023 12:59:00 +0100
Subject: [PATCH] Do not call lfs_free if the buffer to free is NULL

This can happen if lfs_malloc fails, or if the file doesn't exist,
all "goto cleanup" clauses before and including the the lfs_malloc
will cause this.
---
 lfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lfs.c b/lfs.c
index 26280fa8..fa822a0b 100644
--- a/lfs.c
+++ b/lfs.c
@@ -3014,7 +3014,7 @@ static int lfs_file_rawclose(lfs_t *lfs, lfs_file_t *file) {
     lfs_mlist_remove(lfs, (struct lfs_mlist*)file);
 
     // clean up memory
-    if (!file->cfg->buffer) {
+    if ((!file->cfg->buffer) && (file->cache.buffer)) {
         lfs_free(file->cache.buffer);
     }