From ed40eafc13635a523e2bd4396ce7312fbc84873a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E6=BA=90=E6=96=87=E9=9B=A8?=
 <41315874+fumiama@users.noreply.github.com>
Date: Sat, 31 May 2025 03:32:19 +0900
Subject: [PATCH] fix: mis-closed file before init

---
 file.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/file.h b/file.h
index 9021317..5aa4d45 100644
--- a/file.h
+++ b/file.h
@@ -143,6 +143,7 @@ int file_cache_realloc(file_cache_t* fc, uint64_t newsize) {
 }
 
 int file_cache_close(file_cache_t* fc) {
+    if(!fc->data) return 0;
     if(munmap(fc->data - sizeof(uint64_t), fc->size) < 0) {
         perror("munmap");
         return -1;