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Removes unnecessary blank impl for Backend (#8897)

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* Removes unnecessary blank impl for Backend

This commit removes a from my perspective unneccessary implementation
for &T which implement Backend.

The current implementation exists (again from my perspective) solely
to satisfy a methods &mut self parameters (i.e. allows to satisfy
this for an & reference via using &mut &Backend).

As all implementors use a RefCell with borrow_mut() where actually
calling the mentioned &mut self method and then forwad to the
{} implementation of either TrieBackend or ProvingBackend, the
current &mut self seems to be not needed.

* Fixed tests client
This commit is contained in:
Frederik Schulz
2021-05-25 21:50:12 +02:00
committed by GitHub
parent ec409615a3
commit ad76ac798e
10 changed files with 12 additions and 92 deletions
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substrate/primitives/state-machine/src/trie_backend.rs
+1 -1
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@@ -236,7 +236,7 @@ impl<S: TrieBackendStorage<H>, H: Hasher> Backend<H> for TrieBackend<S, H> where
Some(self)
}
fn register_overlay_stats(&mut self, _stats: &crate::stats::StateMachineStats) { }
fn register_overlay_stats(&self, _stats: &crate::stats::StateMachineStats) { }
fn usage_info(&self) -> crate::UsageInfo {
crate::UsageInfo::empty()