swift

06d91d4a - [silgen] Make async_Main compatible with calling nonisolated(nonsending) functions.

[silgen] Make async_Main compatible with calling nonisolated(nonsending) functions. The problem is that async_Main was setting an executor as its main executor instead of an actor. This patch fixes the issue by just grabbing the main actor instead. rdar://153082633 (cherry picked from commit 862ef621c7a600fcea4433265d9878ea8e68318b)