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