From 3c3010083789421ad9bf390f11e374bd70c7c017 Mon Sep 17 00:00:00 2001
From: John-David Dalton <john.david.dalton@gmail.com>
Date: Mon, 3 Oct 2016 22:32:30 -0700
Subject: [PATCH] Use `baseFor` in `baseMerge`.

---
 lodash.js | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/lodash.js b/lodash.js
index 99826620e..59fb4e76c 100644
--- a/lodash.js
+++ b/lodash.js
@@ -3571,12 +3571,7 @@
       if (object === source) {
         return;
       }
-      var props = isArray(source) ? undefined : baseKeysIn(source);
-      arrayEach(props || source, function(srcValue, key) {
-        if (props) {
-          key = srcValue;
-          srcValue = source[key];
-        }
+      baseFor(source, function(srcValue, key) {
         if (isObject(srcValue)) {
           stack || (stack = new Stack);
           baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
@@ -3591,7 +3586,7 @@
           }
           assignMergeValue(object, key, newValue);
         }
-      });
+      }, keysIn);
     }
 
     /**