Passing directory arguments results in `Could not get the ContentType` errors since 2.8.0 about editorconfig-checker

[greut]

@silverwind it was likely introduced by me there: #292

#327 seems to fix this, you may try it using the commit as below.

$ go run github.com/editorconfig-checker/editorconfig-checker/v2/cmd/editorconfig-checker@a7a8d55e3aaecd1b5f1d4c98df01bc12ccf857b7

[mstruebing]

@janedbal tagged a release, but as a breaking change: https://github.com/editorconfig-checker/editorconfig-checker/releases/tag/v3.0.0

[silverwind]

Another related problem is that exit code seems to be 0 with these Could not get the ContentType errors, but I would have expected it to be non-zero when any errors are present.

[janedbal]

Will you tag the fix? Thanks