Fix some lint issues

rehttp.go

@@ -46,7 +46,6 @@
 // *http.Client. Go's stdlib will return an error on the first request
 // if that's the case, because it requires a RoundTripper that
 // implements the CancelRequest method.
-//
 package rehttp
 
 import (
@@ -370,7 +369,7 @@ func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
 		}
 		// close the disposed response's body, if any
 		if res != nil {
-			io.Copy(ioutil.Discard, res.Body)
+			_, _ = io.Copy(ioutil.Discard, res.Body)
 			res.Body.Close()
 		}
 		cancel() // we're done with this response and won't be returning it, so it's safe to cancel immediately

rehttp_server_post17_test.go

@@ -145,7 +145,7 @@ func TestCancelReader(t *testing.T) {
 		w.WriteHeader(http.StatusOK)
 		// need a decent number of bytes to make the race case more likely to fail
 		// https://github.com/go-kit/kit/issues/773
-		w.Write(make([]byte, 102400))
+		_, _ = w.Write(make([]byte, 102400))
 	}))
 	defer ts.Close()
 

rehttp_server_test.go

@@ -295,7 +295,7 @@ func TestClientRetryWithBody(t *testing.T) {
 			return
 		}
 
-		io.Copy(w, r.Body)
+		_, _ = io.Copy(w, r.Body)
 	}))
 	defer srv.Close()