Address System.Net.Http.WinHttpHandler's nullable warnings targeting .NETCoreApp#54995

Merged

stephentoub merged 5 commits intodotnet:mainfrom huoyaoyuan:winhttp-nullable

Jul 14, 2021

+163-94

Commits on Jul 1, 2021

Commits on Jul 7, 2021

Move assertion of _sessionHandle
huoyaoyuan
committed

Commits on Jul 9, 2021

Remove false assertion about RequestHandle.
huoyaoyuan
committed