sigcheck feature request

Question

We use sigcheck as part of our builds on Jenkins to check if all the files have proper signature or not. It exits with non zero retirn code if it comes across a file without signature when it is traversing a directory recursively. It is working great.
I found today that it returns success code (I.e. 0) when I pass single file as parameter instead of a directory. The file in question is msi executable. When I pass path of unsigned msi executable, it returns with message like below:

Sigcheck v2.90 - File version and signature viewer
Copyright (C) 2004-2022 Mark Russinovich
Sysinternals - www.sysinternals.com
No matching files were found.

It would be great it does the same like a directory. If the file is signed, it should return success code, else error code.