Hamish Knight 07cdc2029e [Refactoring] Unwrap optional chains in async transform ...

Remove an optional chain of a success parameter,
as it will no longer be optional, similar to how
we remove a force unwrap.

Note that while this is a locally valid transform
within the optional chain, e.g `foo?.x` -> `foo.x`,
it may change the type of the overall chain, which
could cause errors elsewhere in the code. However
this is generally more useful to the user than
just leaving `foo` as a placeholder. Note this is
only the case when no other optionals are involved
in the chain, e.g `foo?.x?.y` -> `foo.x?.y` is
completely valid.

Resolves rdar://74014826.

2021-04-30 14:34:31 +01:00

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