From 912f7ad62953a807c642aa8f7ec3247f3b4fb579 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Lehni?= <juerg@scratchdisk.com>
Date: Tue, 18 Nov 2014 15:24:40 -0800
Subject: [PATCH] Allow injection of additional undefined fields through object
 literal constructors and #set().

---
 src/core/Base.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/core/Base.js b/src/core/Base.js
index 8aed4cbd..844dc280 100644
--- a/src/core/Base.js
+++ b/src/core/Base.js
@@ -68,8 +68,7 @@ Base.inject(/** @lends Base# */{
             // inheritance trick in the argument reading code.
             var orig = props._filtering || props;
             for (var key in orig) {
-                if (key in this && orig.hasOwnProperty(key)
-                        && !(exclude && exclude[key])) {
+                if (orig.hasOwnProperty(key) && !(exclude && exclude[key])) {
                     var value = props[key];
                     // Due to the _filtered inheritance trick, undefined is used
                     // to mask already consumed named arguments.