N1QL RAW results fail to be parsed correctly

Attempting to perform a query which returns multiple rows using the `SELECT RAW` statement-type will cause libcouchbase to incorrectly parse the results entry.  This incorrect parsing causes something such as `{...,\nresults: [1, 2]\n...}` to invoke the row callback twice, firstly with `1,`, then again with `2\n`.  Note that the row data is including extraneous bytes of the row.  This causes all non-final rows to contain the trailing comma leading to a JSON parse failure (the final row contains an extraneous `\n`, but this is skipped during JSON parsing.