Signed-off-by: wangxiaotao1980 <wangxiaotao1980@gmail.com>更改内存泄露
curl_slist_free_all
Signed-off-by: wangxiaotao1980 <wangxiaotao1980@gmail.com>
空格转换为 tab ，统一风格
Merge pull request #111 from wangxiaotao1980/hotfix/memleak

Signed-off-by: wangxiaotao1980 <wangxiaotao1980@gmail.com>更改内存泄露
Update CHANGELOG.md
Merge pull request #112 from qiniu/develop

Release v6.2.2