update app.js

@@ -122,6 +122,8 @@ function handleEvent(event)
   {
     // music list 출력
     return new Promise(function(resolve, reject){
+      var result = { type: 'text', text:''};
+
       var url="https://www.genie.co.kr/chart/top200";
 
       request(url, function(error, response, html){
@@ -146,7 +148,6 @@ function handleEvent(event)
           }
         });
   
-        var result = { type: 'text', text:''};
         for(var i=0; i<songList.length; i++)
         {
             result.text+=i+1 + ". "+ songList[i].singer+" - "+songList[i].song+"\n";