更新Xcode9.3 后，项目工程里的KissXML/DDXMLDocument.m文件报错：
1、Declaration of ‘xmlKeepBlanksDefault‘ must be imported from module ‘libxml2.parser‘ before it is required
2、Conflicting types for ‘xmlParseMemory‘
转自
https://blog.csdn.net/u011061397/article/details/79961165
KissXML/DDXMLDocument: Declaration of 'xmlKeepBlanksDefault' must be imported
原文：https://www.cnblogs.com/-WML-/p/9040725.html
