Fixed issues found by staticcheck. (#227)

util/client.go

@@ -41,7 +41,7 @@ type LimitingClient struct {
 // Do implements the respective method of the Client interface.
 func (lc *LoggingClient) Do(req *http.Request) (*http.Response, error) {
 	log.Printf("[DO]: %s\n", req.URL.String())
-	return lc.Do(req)
+	return lc.Client.Do(req)
 }
 
 // Get implements the respective method of the Client interface.
@@ -53,19 +53,19 @@ func (lc *LoggingClient) Get(url string) (*http.Response, error) {
 // Head implements the respective method of the Client interface.
 func (lc *LoggingClient) Head(url string) (*http.Response, error) {
 	log.Printf("[HEAD]: %s\n", url)
-	return lc.Head(url)
+	return lc.Client.Head(url)
 }
 
 // Post implements the respective method of the Client interface.
 func (lc *LoggingClient) Post(url, contentType string, body io.Reader) (*http.Response, error) {
 	log.Printf("[POST]: %s\n", url)
-	return lc.Post(url, contentType, body)
+	return lc.Client.Post(url, contentType, body)
 }
 
 // PostForm implements the respective method of the Client interface.
 func (lc *LoggingClient) PostForm(url string, data url.Values) (*http.Response, error) {
 	log.Printf("[POST FORM]: %s\n", url)
-	return lc.PostForm(url, data)
+	return lc.Client.PostForm(url, data)
 }
 
 // Do implements the respective method of the Client interface.

util/file.go

@@ -29,9 +29,7 @@ var invalidRune = regexp.MustCompile(`[^+\-a-z0-9]+`) // invalid runes + `_`
 // specifies valid runes as 'a' to 'z', '0' to '9' and '+', '-', '_'.
 func CleanFileName(s string) string {
 	s = strings.ToLower(s)
-	if strings.HasSuffix(s, ".json") {
-		s = s[:len(s)-len(".json")]
-	}
+	s = strings.TrimSuffix(s, ".json")
 	return invalidRune.ReplaceAllString(s, "_") + ".json"
 }