RuntimeError: version info string is not terminated by zero

In the version info parser ([this line](https://github.com/avast/pe_tools/blob/master/pe_tools/version_info.py#L235)), it seems that it is not possible for a file to have the last number on the version be anything other than zero, and I was wondering why is that a problem?

Start at pe_tools/version_info.py:235 and trace how the version info parser validates the final version number. Reproduce the RuntimeError with a PE file whose final version number is nonzero, then determine the expected behavior from the parser and PE version-info format. Done means the behavior is explained and, if incorrect, covered by a regression test.

Written by the indexing model from the issue text.