refactor(map): change coordinate creation

Author: evansiroky

Diff for: lib/util/itinerary.js

@@ -232,18 +232,15 @@ export function getItineraryBounds (itinerary) {
  * Return a leaflet LatLngBounds object that encloses the given leg's geometry.
  */
 export function getLegBounds (leg) {
-  let coords = polyline
+  const coords = polyline
     .toGeoJSON(leg.legGeometry.points)
     .coordinates.map(c => [c[1], c[0]])
 
   // in certain cases, there might be zero-length coordinates in the leg
   // geometry. In these cases, build us an array of coordinates using the from
   // and to data of the leg.
   if (coords.length === 0) {
-    coords = [
-      [leg.from.lat, leg.from.lon],
-      [leg.to.lat, leg.to.lon]
-    ]
+    coords.push([leg.from.lat, leg.from.lon], [leg.to.lat, leg.to.lon])
   }
   return latLngBounds(coords)
 }