Allow setting default chunksize in generator function, remove extra closures
Allow setting default chunksize in generator function, remove extra closures

demandforce/lua-resty-http,samber/lua-resty-http,beni55/lua-resty-http,istr/lua-resty-http,guanhui07/lua-resty-http,maodeyi/lua-resty-http,hilllinux/lua-resty-http,wangfakang/lua-resty-http,zenedge/lua-resty-http,DorianGray/lua-resty-http,pahud/lua-resty-http