From 66050db3222158c8d674fffe705fee1477e05e4f Mon Sep 17 00:00:00 2001
From: Jonathan Li <jonathan.li@hotmail.co.uk>
Date: Tue, 15 Dec 2015 19:05:01 +0000
Subject: [PATCH] 3rdparty: add zlib project reference to libpng

It was missing.
---
 3rdparty/libpng/projects/vstudio/libpng/libpng.vcxproj | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/3rdparty/libpng/projects/vstudio/libpng/libpng.vcxproj b/3rdparty/libpng/projects/vstudio/libpng/libpng.vcxproj
index 4707ad1c91..ae29be675f 100644
--- a/3rdparty/libpng/projects/vstudio/libpng/libpng.vcxproj
+++ b/3rdparty/libpng/projects/vstudio/libpng/libpng.vcxproj
@@ -169,6 +169,11 @@
     <ClCompile Include="..\..\..\pngwtran.c" />
     <ClCompile Include="..\..\..\pngwutil.c" />
   </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\..\..\zlib\zlib.vcxproj">
+      <Project>{2f6c0388-20cb-4242-9f6c-a6ebb6a83f47}</Project>
+    </ProjectReference>
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>