Update CurlMulti.cpp
Update CurlMulti.cpp
gaomingyang21/curlcpp,ellivr/curlcpp,capturePointer/curlcpp,ellivr/curlcpp,susnux/curlcpp,capturePointer/curlcpp,guker/curlcpp,JosephP91/curlcpp,JosephP91/curlcpp,guker/curlcpp,susnux/curlcpp,gaomingyang21/curlcpp