Fix SSL_get0_raw_cipherlist()
SSL_get0_raw_cipherlist() was a little too "raw" in the case of an SSLv2 compat ClientHello. In 1.0.2 and below, during version negotiation, if we received an SSLv2 compat ClientHello but actually wanted to do SSLv3+ then we would construct a "fake" SSLv3+ ClientHello. This "fake" ClientHello would have its ciphersuite list converted to the SSLv3+ format. It was this "fake" raw list that got saved away to later be returned by a call to SSL_get0_raw_cipherlist(). In 1.1.0+ version negotiation works differently and we process an SSLv2 compat ClientHello directly without the need for an intermediary "fake" ClientHello. This meant that the raw ciphersuite list being saved was in the SSLv2 format. Any caller of this function would not expect that and potentially overread the returned buffer by one byte. Fixes #2189 Reviewed-by:Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/2280)
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