From dfadea8345ea3b01809c1ccf14695355dfeca6e7 Mon Sep 17 00:00:00 2001
From: Victor Zverovich <victor.zverovich@gmail.com>
Date: Thu, 10 Jul 2014 06:50:14 -0700
Subject: [PATCH] Fix 7z invocation.

---
 appveyor.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/appveyor.yml b/appveyor.yml
index fe6bf2a9..9ab10b8a 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -15,7 +15,7 @@ install:
   - ps: |
       if ($env:build -eq "mingw") {
         Invoke-WebRequest -UserAgent wget -Uri http://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win64/Personal%20Builds/mingw-builds/4.9.0/threads-win32/seh/x86_64-4.9.0-release-win32-seh-rt_v3-rev2.7z/download -OutFile mingw.7z
-        7z x -oC:\ mingw.7z > nul
+        &7z x -oC:\ mingw.7z > $null
       }
   - set PATH=C:\Program Files (x86)\MSBuild\12.0\bin\;%PATH%;C:\wingw64\bin