From 0e0a644bf75b144faa007dd479e4d7e79c06c37b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Erik=20Sj=C3=B6lund?= <erik.sjolund@gmail.com>
Date: Sat, 7 Oct 2023 09:53:18 +0200
Subject: [PATCH] read-file.c: restore errno after successful fclose()
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According to errno(3) a function that succeeds is allowed
to change errno.

Signed-off-by: Erik Sjölund <erik.sjolund@gmail.com>
---
 tools/read-file.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/tools/read-file.c b/tools/read-file.c
index ee35a935..5b7919cd 100644
--- a/tools/read-file.c
+++ b/tools/read-file.c
@@ -123,10 +123,9 @@ char *read_file(const char *path, size_t *length)
 		if (buf) {
 			save_errno = errno;
 			free(buf);
+			buf = NULL;
 		}
-		errno = save_errno;
-		return NULL;
 	}
-
+	errno = save_errno;
 	return buf;
 }