linting the code

telegram/api/api.go

@@ -22,15 +22,17 @@ func request(url string) (io.ReadCloser, error) {
 	if err != nil {
 		panic(err)
 	}
+
 	req.Header.Set("Accept", "text/plan")
 	req.Header.Set("User-Agent", apiUserAgent)
 
 	resp, err := httpClient.Do(req)
 	if err != nil {
 		if resp != nil {
-			io.Copy(ioutil.Discard, resp.Body)
+			io.Copy(ioutil.Discard, resp.Body) // nolint: errcheck
 			resp.Body.Close()
 		}
+
 		return nil, fmt.Errorf("cannot perform a request: %w", err)
 	}