facebook.BatchApi should return the results and facebook.Error as error, right now it returns standard error

[cention-mujibur-rahman]

Getting issues while I write this code:
rfb "github.com/huandu/facebook"
url := fmt.Sprintf("%s/feed?fields=id,from,message,created_time,updated_time,picture,likes&until=%d","xxxxxxx")
results, err := rfb.BatchApi("xxxxxxxxxx", rfb.Params{
"method": rfb.GET,
"relative_url": url,
})
if err != nil {
log.Println("Error on connecting: ", err)
}
This is the result body I use to get: results[0].Get("body")
Its working fine if the access_token is ok.
But I need the facebook error code while the access_token is wrong or user change his password or something else happen in facebook api.
In the above cases I got only error message like
"cannot format facebook batch response. json: cannot unmarshal object into Go value of type []facebook.Result" error.
It doesnt make sense to me what is actually causing the error and what is the error message, error code, type and subcode as well.
It causing because in session.go -> graphBatch function is always return []Result but when its having error then its only Result{} and throughing error from makeResult function decode(res)
It will very helpful to me if I can be able to get the facebook error(I mean the Error struct).
Please have a look on it.

[huandu]

@cention-mujibur-rahman Thanks for reporting this issue. I've fixed the issue as you suggested.

[cention-mujibur-rahman]

@huandu Great thanks. :)