Minor code tweaks

Author: Sergio0694

UnitTests/UnitTests.NetCore/UnitTests.NetCore.csproj

@@ -16,7 +16,7 @@
 
   <!-- Workaround for the .NET Core 2.1 binary not resolving the Unsafe assembly properly -->
   <ItemGroup Condition=" '$(TargetFramework)' == 'netcoreapp2.1' ">
-    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="5.0.0-rc.1.20451.14" />
+    <PackageReference Include="System.Runtime.CompilerServices.Unsafe" Version="4.7.1" />
   </ItemGroup>
 
   <ItemGroup>

UnitTests/UnitTests.Shared/Diagnostics/Test_ThrowHelper.cs

@@ -3,10 +3,10 @@
 // See the LICENSE file in the project root for more information.
 
 using System;
-using System.Linq;
 using System.Collections.Generic;
 using System.ComponentModel;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Threading;