Method logWhenMessage

lib/FileSystemInfo.js:1471–1475

(header, message)

		 * @param {string | undefined} message message
		 */
		const logWhenMessage = (header, message) => {
			if (message) {
				logger.log(`${header}: ${message}`);
			}
		};
		logger.log(`${this._statCreatedSnapshots} new snapshots created`);
		logger.log(
			`${