fastcgi: use bytes.Contains and strconv.Itoa (#1857)

caddyhttp/fastcgi/fcgiclient_test.go

@@ -155,7 +155,7 @@ func sendFcgi(reqType int, fcgiParams map[string]string, data []byte, posts map[
 	fcgi.Close()
 	time.Sleep(1 * time.Second)
 
-	if bytes.Index(content, []byte("FAILED")) >= 0 {
+	if bytes.Contains(content, []byte("FAILED")) {
 		globalt.Error("Server return failed message")
 	}
 

caddyhttp/templates/templates.go

@@ -94,7 +94,7 @@ func (t Templates) ServeHTTP(w http.ResponseWriter, r *http.Request) (int, error
 		rb.CopyHeader()
 
 		// set the actual content length now that the template was executed
-		w.Header().Set("Content-Length", strconv.FormatInt(int64(buf.Len()), 10))
+		w.Header().Set("Content-Length", strconv.Itoa(buf.Len()))
 
 		// get the modification time in preparation to ServeContent
 		modTime, _ := time.Parse(http.TimeFormat, w.Header().Get("Last-Modified"))