chore: fix warnings (#3990)

rest/handler/contentsecurityhandler.go

@@ -60,7 +60,8 @@ func executeCallbacks(w http.ResponseWriter, r *http.Request, next http.Handler,
 	}
 }
 
-func handleVerificationFailure(w http.ResponseWriter, r *http.Request, next http.Handler, strict bool, code int) {
+func handleVerificationFailure(w http.ResponseWriter, r *http.Request, next http.Handler,
+	strict bool, _ int) {
 	if strict {
 		w.WriteHeader(http.StatusForbidden)
 	} else {

rest/handler/contentsecurityhandler_test.go

@@ -327,7 +327,7 @@ func buildRequest(rs requestSettings) (*http.Request, error) {
 			query,
 			bodySign,
 		}, "\n")
-		rs.signature = codec.HmacBase64([]byte(key), contentOfSign)
+		rs.signature = codec.HmacBase64(key, contentOfSign)
 	}
 
 	var mode string

rest/handler/cryptionhandler_test.go

@@ -224,7 +224,7 @@ func (m flushableResponseWriter) Write(p []byte) (int, error) {
 	return m.writer.Write(p)
 }
 
-func (m flushableResponseWriter) WriteHeader(statusCode int) {
+func (m flushableResponseWriter) WriteHeader(_ int) {
 	panic("implement me")
 }
 
@@ -240,6 +240,6 @@ func (t *halfWriter) Write(p []byte) (n int, err error) {
 type badWriter struct {
 }
 
-func (b *badWriter) Write(p []byte) (n int, err error) {
+func (b *badWriter) Write(_ []byte) (n int, err error) {
 	return 0, io.ErrClosedPipe
 }

rest/handler/loghandler_test.go

@@ -164,7 +164,7 @@ type mockedReadCloser struct {
 	errMsg string
 }
 
-func (m mockedReadCloser) Read(p []byte) (n int, err error) {
+func (m mockedReadCloser) Read(_ []byte) (n int, err error) {
 	return 0, errors.New(m.errMsg)
 }