rm extra mem

cmd/dump.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"io"
 	"os"
 
@@ -41,10 +40,5 @@ func _dump(writer io.Writer, filepaths []string, tags []string, search, rootDisp
 		v = root.Done
 	}
 
-	b2, err := yaml.Marshal(v)
-	if err != nil {
-		return err
-	}
-	fmt.Fprintf(writer, "%s\n", b2)
-	return nil
+	return yaml.NewEncoder(writer).Encode(v)
 }