redraw don't crash if this._map doesn't exist

wangzhijun233 · Aug 5, 2016 · d2871b3 · d2871b3
1 parent a7f07cb
commit d2871b3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/HeatLayer.js b/src/HeatLayer.js
@@ -34,7 +34,7 @@ L.HeatLayer = (L.Layer ? L.Layer : L.Class).extend({
     },
 
     redraw: function () {
-        if (this._heat && !this._frame && !this._map._animating) {
+        if (this._heat && !this._frame && this._map && !this._map._animating) {
             this._frame = L.Util.requestAnimFrame(this._redraw, this);
         }
         return this;