Error: upload without files will crash

[yeatsYz]

var obj = {
uploadUrl: options.uploadUrl,
method: 'POST',
headers: {},
fields: {},
files: []
};
NativeModules.FileUpload.upload(obj, function(err, result) {
if (result && result.data === 'ok') {
handleRight()
} else {
handleError();
}
});

in FileUploadModule.java/upload
fileInputStream.close();
this line will crash as i pass an empty files array, I think maybe here should have a judge if files array is empty