refactor: use cached slice in app.listen (#6897)

refactor: use cached slice in app.listen (#6897) · expressjs/express@54af593

Original file line number	Diff line number	Diff line change
`@@ -597,7 +597,7 @@ app.render = function render(name, options, callback) {`
`597`	`597`
`598`	`598`	`app.listen = function listen() {`
`599`	`599`	`var server = http.createServer(this)`
`600`		`-var args = Array.prototype.slice.call(arguments)`
	`600`	`+var args = slice.call(arguments)`
`601`	`601`	`if (typeof args[args.length - 1] === 'function') {`
`602`	`602`	`var done = args[args.length - 1] = once(args[args.length - 1])`
`603`	`603`	`server.once('error', done)`