Fix compilation warnings #12197

Job	Run time
preflight / preflight	1m 26s
preflight / ci-versions	1m 7s
cargo-check-benches (master)	19m 39s
cargo-check-benches (current)	21m 19s
test-frame-ui	25m 48s
cargo-check-each-crate (1)	19m 50s
cargo-check-all-crate-macos	10m 53s
test-full-crypto-feature	2m 28s
test-node-metrics	12m 11s
cargo-check-each-crate (2)	18m 49s
cargo-check-each-crate (3)	6m 27s
cargo-check-each-crate (4)	18m 52s
cargo-check-each-crate (5)	26m 43s
cargo-check-each-crate (6)	12m 46s
cargo-check-each-crate (7)	28m 57s
test-frame-examples-compile-to-wasm	2m 53s
check-tracing	2m 15s
test-deterministic-wasm	7m 20s
check-metadata-hash	7m 0s
node-bench-regression-guard	12s
All test misc tests passed	1s
	4h 6m 56s

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