xAuth support fix.
xAuth support fix.

IsCoolEntertainment/unity-restsharp,KraigM/RestSharp,SaltyDH/RestSharp,lydonchandra/RestSharp,restsharp/RestSharp,wparad/RestSharp,rucila/RestSharp,devinrader/RestSharpRTExperimental,wparad/RestSharp,kouweizhong/RestSharp,haithemaraissia/RestSharp,dyh333/RestSharp,mattwalden/RestSharp,PKRoma/RestSharp,uQr/RestSharp,mattleibow/RestSharp,fmmendo/RestSharp,dmgandini/RestSharp,felipegtx/RestSharp,Haacked/RestSharp,jiangzm/RestSharp,eamonwoortman/RestSharp.Unity,benfo/RestSharp,paulcbetts/RestSharp,IsCoolEntertainment/unity-restsharp,who/RestSharp,huoxudong125/RestSharp,mwereda/RestSharp,paulcbetts/RestSharp,Haacked/RestSharp,periface/RestSharp,chengxiaole/RestSharp,rivy/RestSharp,devinrader/RestSharpRTExperimental,dgreenbean/RestSharp,RestSharp-resurrected/RestSharp,cnascimento/RestSharp,amccarter/RestSharp