Adds an extra line with an empty quote

[xanuthatusu]

I haven't looked too much into this to find out why exactly this could be happening, but right now, I get this generated persist query:

      name: "GetEvent",
      query: [
        "SELECT",
          "org_id,",
          "region_id,",
          "list_id,",
          "pubsub_id,",
          "pipeline_element_id,",
          "delta_url",
        "FROM lms_event_queue",
        ""
      ],
      pm_strategy: "$",
      in: ".matrix.lms.Event",
      out: ".matrix.lms.Event",

From a pete file that looks like:

GetEvent
SELECT
  org_id,
  region_id,
  list_id,
  pubsub_id,
  pipeline_element_id,
  delta_url
FROM lms_event_queue
in: Event
out: Event

I would expect the line that just contains the "" to not be there.