From 79e2f7c0987f7ab8045a318d5a16ae5a42b135c6 Mon Sep 17 00:00:00 2001
From: Xiao YiFang <yifang.xiao@gmail.com>
Date: Thu, 16 Jun 2022 08:18:59 +0800
Subject: [PATCH] unmap file when throw exception

---
 chunkedstorage.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/chunkedstorage.cc b/chunkedstorage.cc
index ff129f81..3133b651 100644
--- a/chunkedstorage.cc
+++ b/chunkedstorage.cc
@@ -160,7 +160,10 @@ char * Reader::getBlock( uint32_t address, vector< char > & chunk )
 
     if( uncompress( (unsigned char *)&chunk.front(), &decompressedLength, chunkDataBytes, compressedSize ) != Z_OK
         || decompressedLength != chunk.size() )
+    {
+      file.unmap( chunkDataBytes );
       throw exFailedToDecompressChunk();
+    }
 
     file.unmap( chunkDataBytes );
   }