Fuzz

refactor: clean dash core and hashes for warnings and clippy #747

Job	Run time
fuzz (dash_deser_net_msg)	1m 53s
fuzz (dash_deserialize_amount)	2m 8s
fuzz (dash_deserialize_script)	3m 36s
fuzz (dash_script_bytes_to_asm_fmt)	1m 50s
fuzz (dash_deserialize_block)	15m 19s
fuzz (hashes_ripemd160)	1m 46s
fuzz (hashes_json)	2m 42s
fuzz (dash_deserialize_address)	2m 8s
fuzz (dash_outpoint_string)	15m 2s
fuzz (dash_deserialize_witness)	10m 52s
fuzz (hashes_sha1)	1m 55s
fuzz (hashes_sha256)	14m 54s
fuzz (hashes_sha512_256)	1m 50s
fuzz (hashes_cbor)	10m 31s
fuzz (hashes_sha512)	16m 53s
verify-execution	0s
	1h 43m 19s

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