* client/finality-grandpa/src/until_imported: Refactor BlockGlobalMessage
`BlockGlobalMessage` owns an `inner` which contains (1) a count for the
amount of outstanding blocks to be waited on and (2) the message itself.
Given that both is already wrapped in an `Arc` there is no need to keep
track of the outstanding blocks, given that it simply corresponds to the
amount of strong reference counts on the `Arc` itself.
This commit removes the atomic counter within `inner` and piggy backs on
the `Arc` reference counter instead.
* client/finality-grandpa/src/until_imported: Remove useless match
* client/finality-grandpa/src/until_imported.rs: Remove unused var
Co-Authored-By: André Silva <andre.beat@gmail.com>
* client/finality-grandpa/src/until_imported: Address comment suggestion
Co-authored-by: André Silva <andre.beat@gmail.com>