Adjust RequestToken StatusCode check

* Adjust check for consistency with AccessToken

config.go

@@ -74,13 +74,13 @@ func (c *Config) RequestToken() (requestToken, requestSecret string, err error)
 	}
 	// when err is nil, resp contains a non-nil resp.Body which must be closed
 	defer resp.Body.Close()
+	if resp.StatusCode != http.StatusOK {
+		return "", "", fmt.Errorf("oauth1: Server returned status %d", resp.StatusCode)
+	}
 	body, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
 		return "", "", err
 	}
-	if resp.StatusCode != http.StatusOK {
-		return "", "", fmt.Errorf("oauth1: Server returned status %d", resp.StatusCode)
-	}
 	// ParseQuery to decode URL-encoded application/x-www-form-urlencoded body
 	values, err := url.ParseQuery(string(body))
 	if err != nil {