Zap defer logger.Sync()

[kolkov]

Hi! Why we don't defer logger.Sync()?

func ExampleNewStdLog() {
	logger := zap.NewExample()
	defer logger.Sync()

	std := zap.NewStdLog(logger)
	std.Print("standard logger wrapper")
	// Output:
	// {"level":"info","msg":"standard logger wrapper"}
}