Remove unused local variables

src/ol/geom/polygon.js

@@ -464,7 +464,7 @@ ol.geom.Polygon.makeRegular = function(polygon, center, radius, opt_angle) {
   goog.asserts.assert(ends.length === 1, 'only 1 ring is supported');
   var sides = flatCoordinates.length / stride - 1;
   var startAngle = opt_angle ? opt_angle : 0;
-  var angle, coord, offset;
+  var angle, offset;
   for (var i = 0; i <= sides; ++i) {
     offset = i * stride;
     angle = startAngle + (goog.math.modulo(i, sides) * 2 * Math.PI / sides);

src/ol/layer/heatmaplayer.js

@@ -254,7 +254,7 @@ ol.layer.Heatmap.prototype.handleRender_ = function(event) {
   var canvas = context.canvas;
   var image = context.getImageData(0, 0, canvas.width, canvas.height);
   var view8 = image.data;
-  var i, ii, alpha, offset;
+  var i, ii, alpha;
   for (i = 0, ii = view8.length; i < ii; i += 4) {
     alpha = view8[i + 3] * 4;
     if (alpha) {

src/ol/render/canvas/canvasreplay.js

@@ -1978,7 +1978,7 @@ ol.render.canvas.ReplayGroup.prototype.replay = function(
   context.closePath();
   context.clip();
 
-  var i, ii, j, jj, replays, replay, result;
+  var i, ii, j, jj, replays, replay;
   for (i = 0, ii = zs.length; i < ii; ++i) {
     replays = this.replaysByZIndex_[zs[i].toString()];
     for (j = 0, jj = ol.render.REPLAY_ORDER.length; j < jj; ++j) {

src/ol/render/webgl/webglreplay.js

@@ -1028,7 +1028,7 @@ ol.render.webgl.ReplayGroup.prototype.isEmpty = function() {
 ol.render.webgl.ReplayGroup.prototype.replay = function(context,
     center, resolution, rotation, size, pixelRatio,
     opacity, skippedFeaturesHash) {
-  var i, ii, replay, result;
+  var i, ii, replay;
   for (i = 0, ii = ol.render.REPLAY_ORDER.length; i < ii; ++i) {
     replay = this.replays_[ol.render.REPLAY_ORDER[i]];
     if (replay !== undefined) {

src/ol/renderer/canvas/canvastilelayerrenderer.js

@@ -360,7 +360,7 @@ ol.renderer.canvas.TileLayer.prototype.prepareFrame =
       [z, canvasTileRange.minX, canvasTileRange.maxY],
       tmpExtent));
   var currentZ, index, scale, tileCoordKey, tileExtent, tilesToDraw;
-  var ix, iy, interimTileExtent, interimTileRange, maxX, maxY;
+  var ix, iy, interimTileRange, maxX, maxY;
   var height, width;
   for (i = 0, ii = zs.length; i < ii; ++i) {
     currentZ = zs[i];