msvc project: add mem_priv.h

ports/win32/msvc/lwIP.vcxproj

@@ -421,6 +421,7 @@
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\api_msg.h" />
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\memp_priv.h" />
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\memp_std.h" />
+    <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\mem_priv.h" />
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\nd6_priv.h" />
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\raw_priv.h" />
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\sockets_priv.h" />

ports/win32/msvc/lwIP.vcxproj.filters

@@ -999,6 +999,9 @@
     <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\raw_priv.h">
       <Filter>src\include\lwip\priv</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\..\lwip\src\include\lwip\priv\mem_priv.h">
+      <Filter>src\include\lwip\priv</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <CustomBuildStep Include="..\lwipcfg_msvc.h.example">