Exception handling causes internal compiler error (C1001) in certain scenarios

[PooyaZv]

This issue is relevant under two scenarios:

• You have a try-catch(-finally) inside of a catch or finally
• You have ARC inside of a catch or finally (since ARC uses exception handling)

This can cause an internal compiler error.

Workaround: While we are working on a fix this issue can be mitigated through moving the code inside the catch or finally into a separate function (and simply calling that function from the catch or finally where the code used to live before)

[DHowett-MSFT]

Fixed with #2869