[@types/semaphore] interface Task () method should have an extra optional parameter

[DeathKing]

The Task interface is defined as:

DefinitelyTyped/types/semaphore/index.d.ts

Lines 3 to 14 in dfd0ded

	declare namespace semaphore {
	interface Task {
	(): void;
	}
	interface Semaphore {
	capacity: number;
	current: number;
	available(n: number): boolean;
	take(task: Task): void;

while take() function could be invoked with a unary function like:

var sem = require('semaphore')()
sem.take(function(leave) {
    console.log('about to leave')
    leave()
})

reference: abrkn/semaphore.js#2 (comment)