refactor statements #1427

Job	Run time
clippy	1m 23s
audit	11s
formatting (nasl-syntax)	4s
typos	1m 6s
formatting (storage)	4s
unittests (stable)	3m 32s
formatting (nasl-interpreter)	2s
unittests (beta)	3m 31s
formatting (redis-storage)	3s
unittests (nightly)	3m 47s
formatting (json-storage)	2s
formatting (nasl-cli)	3s
rs-build-binaries / build	10m 2s
verify-syntax	1m 22s
verify-feed-update	3m 35s
	28m 47s

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