fix(hideRoute): fix protential reading style of null

modules/LiveRoute.js

@@ -193,10 +193,9 @@ class Route extends React.Component {
 
   // 隐藏 DOM 并保存 scroll
   hideRoute() {
-    const previousDisplayStyle = this.routeDom.style.display
-    if (this.routeDom && previousDisplayStyle !== 'none') {
+    if (this.routeDom && this.routeDom.style.display !== 'none') {
       this.saveScroll()
-      this._previousDisplayStyle = previousDisplayStyle
+      this._previousDisplayStyle = this.routeDom.style.display
       this.routeDom.style.display = 'none'
     }
   }

package.json

 {
   "name": "react-live-route",
-  "version": "1.1.4",
+  "version": "1.1.5",
   "description": "A living route for react-router-v4",
   "repository": "fi3ework/react-live-route",
   "license": "MIT",