message: Fix: Some active postcodes now have a null location value
diff: @@ -97,7 +97,7 @@ describe("Postcode Model", function () {
  describe("#populateLocation", () => {
  it ("populates location collumn with geohashes", done => {
  - const query = `SELECT location from ${Postcode.relation}`;
  + const query = `SELECT location from ${Postcode.relation} WHERE location IS NOT NULL`;
  Postcode._query(query, (error, result) => {
  if (error) return done(error);
  result.rows.forEach(row => assert.equal(row.location.length, 50));
  