zlib中zip和unzip的bug修复（报错及中文乱码）

源代码见Zip Utils - Clean, Elegant, Simple, C++/Win32 - CodeProjecthttps://www.codeproject.com/Articles/7530/Zip-Utils-Clean-Elegant-Simple-Cplusplus-Win

下面三个链接能解决一些问题：如

`解压空文件出错`、`解压文件夹大小不一致`:

Zip Utils - Clean, Elegant, Simple, C++/Win32 - CodeProjecthttps://www.codeproject.com/Articles/7530/Zip-Utils-Clean-Elegant-Simple-Cplusplus-Win?msg=5312023#xx5312023xx

`空文件压缩会报末端错误`、`获取文件修改时间错误 会报警告--头部错误`:Zip Utils - Clean, Elegant, Simple, C++/Win32 - CodeProjecthttps://www.codeproject.com/Articles/7530/Zip-Utils-Clean-Elegant-Simple-Cplusplus-Win?msg=5312028#xx5312028xx

`解压、压缩中文文件名乱码`:

Zip Utils - Clean, Elegant, Simple, C++/Win32 - CodeProjecthttps://www.codeproject.com/Articles/7530/Zip-Utils-Clean-Elegant-Simple-Cplusplus-Win?msg=4079933#xx4079933xx