Minor testing fixes

Author: dahall

UnitTests/PInvoke/Kernel32/WinBase.CommTests.cs

@@ -85,7 +85,7 @@ public void GetSetCommConfigTest()
 	{
 		using SafeHFILE hCom = ComPort;
 		Assert.That(GetCommConfig(hCom, out var cc), ResultIs.Successful);
-		cc.WriteValues();
+		cc!.WriteValues();
 		Assert.That(SetCommConfig(hCom, cc), ResultIs.Successful);
 	}
 
@@ -144,7 +144,7 @@ public void GetSetCommTimeoutsTest()
 	public void GetSetDefaultCommConfigTest()
 	{
 		Assert.That(GetDefaultCommConfig(pcCommPort, out var cc), ResultIs.Successful);
-		cc.WriteValues();
+		cc!.WriteValues();
 		Assert.That(SetDefaultCommConfig(pcCommPort, cc), ResultIs.Successful);
 	}
 

UnitTests/PInvoke/Kernel32/WinBase.FileTests.cs

@@ -42,7 +42,7 @@ public void CopyFile2Test()
 	{
 		COPYFILE2_EXTENDED_PARAMETERS par = COPYFILE2_EXTENDED_PARAMETERS.Default;
 		par.dwCopyFlags = COPY_FILE.COPY_FILE_RESTARTABLE;
-		Assert.That(CopyFile2(fn, newfn, ref par), ResultIs.Successful);
+		Assert.That(CopyFile2(fn, newfn, par), ResultIs.Successful);
 		Assert.That(DeleteFile(newfn), Is.True);
 	}