const hash/fnv.magic128a

5 uses

	hash/fnv (current package)
		fnv.go#L216: 	magic128a        = "fnv\x06"
		fnv.go#L274: 	b = append(b, magic128a...)
		fnv.go#L341: 	if len(b) < len(magic128a) || string(b[:len(magic128a)]) != magic128a {