cocos2d/cocos2d-x — pull request #4232 by xhcnb (2013-11-14 02:36:31+00:00)
Title: Fix: CCUserDefault::createXMLFile with correct XML definition.

Thanks to

We should use NULL to create a default XML declaration.
If just pass "1.0" to it , will cause `XMLDocument::NewDeclaration` have an wrong xml header.