EditorConfig: Actually print warning if C Core not found
EditorConfig: Actually print warning if C Core not found

This is just a simple fix for #51.  I'm not sure if writing a message
is the right way to do this, and if we wanted to use `lwarn`, we
could, just changing `:debug` to `:warning`.  I think this follows our
pattern for previous things.

[GitHub] This commit resolves #51.

kotct/dot,kotct/dot