Merge pull request #1520 from smelnikov/propertyfix

_.property support for null and undefined

Author: jashkenas

test/utility.js

@@ -37,6 +37,8 @@
   test('property', function() {
     var moe = {name : 'moe'};
     equal(_.property('name')(moe), 'moe', 'should return the property with the given name');
+    equal(_.property('name')(null), undefined, 'should return undefined for null values');
+    equal(_.property('name')(undefined), undefined, 'should return undefined for undefined values');
   });
 
   test('random', function() {

underscore.js

@@ -1190,7 +1190,7 @@
 
   _.property = function(key) {
     return function(obj) {
-      return obj[key];
+      return obj == null ? void 0 : obj[key];
     };
   };