fix a set of lint warnings #40

Job	Run time
setup-matrix	17s
test (ubuntu-latest, accounting)	2m 4s
test (ubuntu-latest, auth)	3m 11s
test (ubuntu-latest, b2b)	6m 42s
test (ubuntu-latest, dialog)	3m 18s
test (ubuntu-latest, permissions)	1m 27s
test (ubuntu-latest, presence)	1m 6s
test (ubuntu-latest, record-route)	52s
test (ubuntu-latest, registration)	5m 20s
test (ubuntu-latest, startup)	1m 52s
test (ubuntu-latest, stir-shaken)	5m 37s
test (ubuntu-latest, topology-hiding)	3m 36s
test (ubuntu-latest, uac-auth)	3m 1s
	38m 23s

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