Ensure that the ERR_STATE is left in a consistent state

We shouldn't ever have the case where the data flags indicate that
err_data has been malloc'd, but the err_data field is NULL.

Ensure that the ERR_STATE is left in a consistent state

We shouldn't ever have the case where the data flags indicate that
err_data has been malloc'd, but the err_data field is NULL.

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/22368)

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QUIC TLS: Rethink error handling

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21547)

QUIC err handling: Save and restore error state

We save the error state from the thread that encountered
a permanent error condition caused by system or internal
error to the QUIC_CH

QUIC err handling: Save and restore error state

We save the error state from the thread that encountered
a permanent error condition caused by system or internal
error to the QUIC_CHANNEL.

Then we restore it whenever we are returning to a user
call when protocol is shutdown.

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Matt Caswell <matt@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21087)

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