From cb8e3f7adfaa48e09fb7a467086d69e4b6f948bd Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Sat, 27 Apr 2013 20:07:22 +0200
Subject: [PATCH] Checking whether closing succeeds

---
 util/env_win.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/util/env_win.cc b/util/env_win.cc
index c64027f674f87..4730192bf8974 100644
--- a/util/env_win.cc
+++ b/util/env_win.cc
@@ -462,8 +462,8 @@ bool Win32MapFile::_UnmapCurrentRegion()
             // Defer syncing this data until next Sync() call, if any
             _pending_sync = true;
         }
-        UnmapViewOfFile(_base);
-        CloseHandle(_base_handle);
+        if (!UnmapViewOfFile(_base) || !CloseHandle(_base_handle))
+            result = false;
         _file_offset += _limit - _base;
         _base = NULL;
         _base_handle = NULL;