CB-11959 Fixed the jshint issues
CB-11959 Fixed the jshint issues

purplecabbage/cordova-plugin-file-transfer,apache/cordova-plugin-file-transfer,alsorokin/cordova-plugin-file-transfer,purplecabbage/cordova-plugin-file-transfer,bcalvez/cordova-plugin-file-transfer,alsorokin/cordova-plugin-file-transfer,starquake/cordova-plugin-file-transfer,starquake/cordova-plugin-file-transfer,bcalvez/cordova-plugin-file-transfer,purplecabbage/cordova-plugin-file-transfer,alsorokin/cordova-plugin-file-transfer,starquake/cordova-plugin-file-transfer,alsorokin/cordova-plugin-file-transfer,purplecabbage/cordova-plugin-file-transfer,starquake/cordova-plugin-file-transfer,apache/cordova-plugin-file-transfer