Build from AppVeyor does not have any content inside #1756

Steps to reproduce

Picked the latest build from AppVeyor https://ci.appveyor.com/project/PowerShell/PowerShell/build/artifacts
Installed the MSI

Expected behavior

MSI is installed and PowerShell works

Actual behavior

MSI is installed. But there is no content inside the folder.

Environment data

Cannot get environment data since PowerShell is not even installed.

It looks like the PR #1742 broke the build. AppVeyor is not building Release configuration but the changes for this PR is assuming that it is.