win32: add test_netif to vs project files

ports/win32/msvc/lwip_unittests.vcxproj

@@ -87,6 +87,7 @@
     <ClCompile Include="..\..\..\..\lwip\test\unit\arch\sys_arch.c" />
     <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_def.c" />
     <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_mem.c" />
+    <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_netif.c" />
     <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_pbuf.c" />
     <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_timers.c" />
     <ClCompile Include="..\..\..\..\lwip\test\unit\ip4\test_ip4.c" />
@@ -105,6 +106,7 @@
     <ClInclude Include="..\..\..\..\lwip\test\unit\arch\sys_arch.h" />
     <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_def.h" />
     <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_mem.h" />
+    <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_netif.h" />
     <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_pbuf.h" />
     <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_timers.h" />
     <ClInclude Include="..\..\..\..\lwip\test\unit\ip4\test_ip4.h" />

ports/win32/msvc/lwip_unittests.vcxproj.filters

@@ -79,6 +79,9 @@
     <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_timers.c">
       <Filter>core</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\..\..\lwip\test\unit\core\test_netif.c">
+      <Filter>core</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_mem.h">
@@ -128,5 +131,8 @@
     <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_timers.h">
       <Filter>core</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\..\..\lwip\test\unit\core\test_netif.h">
+      <Filter>core</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>