[openssl/openssl] 604218: QUIC: Harden ring buffer against internal misuse

[Hugo Landau]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 60421893a286bb9eb7fb7c2454b84af9778ffca4
      https://github.com/openssl/openssl/commit/60421893a286bb9eb7fb7c2454b84af9778ffca4
  Author: Hugo Landau <hlandau at openssl.org>
  Date:   2023-08-31 (Thu, 31 Aug 2023)

  Changed paths:
    M include/internal/ring_buf.h

  Log Message:
  -----------
  QUIC: Harden ring buffer against internal misuse

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21895)