fuzz: FuzzedSock::Recv() don't lose bytes from MSG_PEEK read

Problem:

If `FuzzedSock::Recv(N, MSG_PEEK)` is called then `N` bytes would be
retrieved from the fuzz provider, saved in `m_peek_data` and returned
to the caller (ok).

If after this `FuzzedSock::Recv(M, 0)` is called where `M < N`
then the first `M` bytes from `m_peek_data` would be returned
to the caller (ok), but the remaining `N - M` bytes in `m_peek_data`
would be discarded/lost (not ok). They must be returned by a subsequent
`Recv()`.

To resolve this, only remove the head `N` bytes from `m_peek_data`.

0 files changed, 0 insertions, 0 deletions