wp8: bugfixing
wp8: bugfixing

Creative-Licence-Digital/cordova-plugin-background-download,rbournissent/cordova-plugin-background-download,kaynz/cordova-backgrounddownload,sgrebnov/cordova-plugin-background-download,rbournissent/cordova-plugin-background-download,rbournissent/cordova-plugin-background-download,kaynz/cordova-backgrounddownload,sgrebnov/cordova-plugin-background-download,Creative-Licence-Digital/cordova-plugin-background-download,kaynz/cordova-backgrounddownload,rbournissent/cordova-plugin-background-download,sgrebnov/cordova-plugin-background-download,kaynz/cordova-backgrounddownload,Creative-Licence-Digital/cordova-plugin-background-download,Creative-Licence-Digital/cordova-plugin-background-download