Results 2 issues of Tiémé Togola

Fixes #144 by correctly setting the state after an invalid hive execute. Whenever a fetch is invoked, there are checks in `DBAPICursor.fetchone` to determine whether the current state is `_STATE_NONE`...

Currently, anyone interested in Deno Deploy who reads the [marketing page](https://deno.com/deploy) or the first few pages of the [Deploy Docs](https://deno.com/deploy/docs) might assume that anything that works in Deno will work...