drop redundant NArg check when looping Args

cmd/yamlfmt/yamlfmt.go

@@ -28,8 +28,6 @@ import (
 func main() {
 	indent := flag.Int("indent", 2, "default indent")
 	flag.Parse()
-
-	if flag.NArg() > 0 {
 	for _, path := range flag.Args() {
 		sourceYaml, err := os.ReadFile(path)
 		if err != nil {
@@ -53,7 +51,6 @@ func main() {
 		}
 	}
 }
-}
 
 func fetchYaml(sourceYaml []byte) (*yaml.Node, error) {
 	rootNode := yaml.Node{}