Updated tests for iphlpapi

Author: dahall

UnitTests/PInvoke/IpHlpApi/IpHlpApi.csproj

@@ -21,6 +21,7 @@
     <DefineConstants>DEBUG;TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <DebugType>pdbonly</DebugType>
@@ -29,12 +30,14 @@
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
+    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="IpHlpApiTests.cs" />
+    <Compile Include="NetIOApiTests.cs" />
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="NUnit">