Merge pull request zillow#50 from dwhiffing/timeout-woes

Clear resize timeout on unmounting to prevent errors

Author: qwtel

react-slider.js

@@ -264,6 +264,7 @@
     },
 
     componentWillUnmount: function () {
+      clearTimeout(this.resizeTimeout)
       window.removeEventListener('resize', this._handleResize);
     },
 
@@ -273,7 +274,7 @@
 
     _handleResize: function () {
       // setTimeout of 0 gives element enough time to have assumed its new size if it is being resized
-      window.setTimeout(function() {
+      this.resizeTimeout = window.setTimeout(function() {
         var slider = this.refs.slider.getDOMNode();
         var handle = this.refs.handle0.getDOMNode();
         var rect = slider.getBoundingClientRect();