pttodo-cli works even if file does not initially exist

cmd/pttodo-cli/cli.go

@@ -40,6 +40,7 @@ func edit(filepath string) error {
 		if err != nil {
 			return err
 		}
+		if _, err := os.Stat(filepath); err == nil {
 			g, err := os.Open(filepath)
 			if err != nil {
 				return err
@@ -48,6 +49,7 @@ func edit(filepath string) error {
 				return err
 			}
 			g.Close()
+		}
 		f.Close()
 		tempFile = f.Name()
 		return nil