From 17eb7af474fe26d0f9ca3b98a24dfefa9ea3feb2 Mon Sep 17 00:00:00 2001
From: Tim Tucker <tim@timtucker.com>
Date: Wed, 20 Mar 2013 14:46:38 -0300
Subject: [PATCH] Don't need to get destination[key] type twice

---
 knockout.mapping.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/knockout.mapping.js b/knockout.mapping.js
index 2ac4a3d..be411a8 100644
--- a/knockout.mapping.js
+++ b/knockout.mapping.js
@@ -61,7 +61,7 @@
 				if (key && destination[key] && destType !== "array" && destType !== "string") {
 					extendObject(destination[key], source[key]);
 				} else {
-					var bothArrays = exports.getType(destination[key]) === "array" && exports.getType(source[key]) === "array";
+					var bothArrays = destType === "array" && exports.getType(source[key]) === "array";
 					if (bothArrays) {
 						destination[key] = unionArrays(destination[key], source[key]);
 					} else {