We saw an issue where a review request on a Local Site was getting

created without a local_id. This seems likely to be due to an exception

when updating from a change number. I could not reproduce it locally,

but it makes sense.
This adds some bullet-proofing to that, falling back to not updating the

review request. It also doesn't attempt to update until after the review

request has been assigned a local_id (if on a Local Site).

Reproduced the original bug locally. After this fix, I could not reproduce

it.
I forced an exception to raise and then tried posting. I saw the log

message, but the review request was created, with a local ID.