Fix the "Invalid cookie header ... Unable to parse expires attribute" warning

the warning message may like this: W/ResponseProcessCookies﹕ Invalid
cookie header: "Set-Cookie:
BAIDUID=5FCCA3FAD453A9F0B16D57AF0468F387:FG=1; max-age=31536000;
expires=Thu, 08-Jan-15 15:05:50 GMT; domain=.baidu.com; path=/;
version=1". Unable to parse expires attribute: Thu