Minor audit fixes #605

Job	Run time
Shared / Backstage	5s
Shared / Static Analysis (bridge-common, contract, near, bridge-common, 1, ., 1.18, false, --filter-paths ...	1m 25s
Shared / Static Analysis (bridge-near-token-locker, contract, near, token-locker, 1, ., 1.18, false, --fil...	1m 33s
Shared / Static Analysis (bridge-token-factory-on-near, contract, near, bridge-token-factory, 1, ., 1.18, ...	39s
Shared / Static Analysis (bridge-token-on-near, contract, near, bridge-token, 1, ., 1.18, false, --filter-...	1m 3s
Shared / Static Analysis (erc20-bridge-token, contract, ethereum, erc20-bridge-token, 1, erc20-bridge-toke...	1m 45s
Shared / Static Analysis (erc20-locker, contract, ethereum, erc20-connector, 1, erc20-connector, 1.18, tru...	28s
	6m 58s

Provide feedback