[Download] Fix network type checking

It is ok to set networktype to null, as it is optional.
And no need to throw exception if trying to set invalid value
(according to spec).

diff --git a/download/download_api.js b/download/download_api.js
index fb0691e..bea1094 100644 (file)
--- a/download/download_api.js
+++ b/download/download_api.js
@@ -208,10 +208,8 @@ tizen.DownloadRequest = function(url, destination, fileName, networkType) {
   Object.defineProperty(this, 'networkType', {
     get: function() { return this.networkTypeValue; },
     set: function(type) {
-      if (type in AllowDownloadOnNetworkType) {
+      if (type === null || type in AllowDownloadOnNetworkType) {
         this.networkTypeValue = type;
-      } else {
-        throw new tizen.WebAPIException(tizen.WebAPIException.INVALID_VALUES_ERR);
       }
     }
   });