*: Fix clippy warnings (#2139)

* Fix needless question mark operator

* Don't convert from u64 to u64

LocalStreamId is already a u64, no need to convert.

* Don't use `.into()` to convert to the same type

* Don't specify lifetime if it can be inferred

* Use `vec!` macro if we immediately push to it

This creates the vector with the appropriate capacity.

* Don't index array when taking a reference is enough

Co-authored-by: Max Inden <mail@max-inden.de>

protocols/identify/src/protocol.rs

@@ -207,7 +207,7 @@ where
         Ok(v) => v,
         Err(err) => {
             debug!("Invalid message: {:?}", err);
-            return Err(err.into())
+            return Err(err)
         }
     };