a5ef81cfb42bc16cc1eb504a704e49bf51b3ac50 Fix: Safari 9 compatibility …

…- doesn't have a `childNodes.forEach` function.

https://datatables.net/forums/discussion/79829

Sync to source repo @a5ef81cfb42bc16cc1eb504a704e49bf51b3ac50

datatables.json

@@ -14,5 +14,5 @@
  ],
  "src-repo": "http://github.com/DataTables/DataTablesSrc",
  "last-tag": "2.1.6",
- "last-sync": "c1fb50aa929c0eccf8c2f1722feb7af141389b7c"
+ "last-sync": "a5ef81cfb42bc16cc1eb504a704e49bf51b3ac50"
 }