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Unverified Commit 39a36052 authored by Bastian Köcher's avatar Bastian Köcher Committed by GitHub
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Make `produce_candidate` return an `Option` (#1309) 

* Make `produce_candidate` return an `Option`

Instead of `produce_candidate` returning a `Result`, it should return an
`Option`. The only supported error was `InvalidHead` anyway and Cumulus
will take care to print appropriate information on what failed and
Polkadot can just ignore it.

* Fix warning
parent ff6dc9a9
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