crypto_ensure_empty
if (i != QUIC_ENC_LEVEL_0RTT && !crypto_ensure_empty(ch->crypto_recv[ossl_quic_enc_level_to_pn_space(i)])) {
if (!crypto_ensure_empty(ch->crypto_recv[ossl_quic_enc_level_to_pn_space(i)])) {
static int crypto_ensure_empty(QUIC_RSTREAM *rstream);