angular/angular.js — pull request #1695 by gonzaloruizdevilla (2012-12-11 19:41:40+00:00)
Title: fix(equals): fix #1648 angular.equals(a, b) a = {} && b = {x:undefined}

given a = {} and b = {x:undefined} then
angular.equals(a, b) should be true
angular.equals(b, a) should be true (this happened before)

Closes: #1648