ossl_quic_channel_get_mutex
CRYPTO_MUTEX *ossl_quic_channel_get_mutex(QUIC_CHANNEL *ch);
CRYPTO_MUTEX *m = ossl_quic_channel_get_mutex(qta->ch);
CRYPTO_MUTEX *m = ossl_quic_channel_get_mutex(qta->ch);
CRYPTO_MUTEX *mutex = ossl_quic_channel_get_mutex(ch);