[en] Protecting delegate correlation set in multi-threaded environment (issue #2175).
[en] Protecting delegate correlation set in multi-threaded environment (issue #2175).

git-tfs-id: [https://tfs.codeplex.com:443/tfs/TFS15]$/cyan;C38284

zyanfx/Zyan,yallie/Zyan,yallie/Zyan,zyanfx/Zyan