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e883b37768
`FuzzedSock::Accept()` properly returns a new socket, but it forgot to set the output argument `addr`, like `accept(2)` is expected to. This could lead to reading uninitialized data during testing when we read it, e.g. from `CService::SetSockAddr()` which reads the `sa_family` member. Set `addr` to a fuzzed IPv4 or IPv6 address.