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-rw-r--r--ssl/d1_both.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/ssl/d1_both.c b/ssl/d1_both.c
index b4ee7abe27dc..c2c8d57e9d9c 100644
--- a/ssl/d1_both.c
+++ b/ssl/d1_both.c
@@ -1370,9 +1370,12 @@ int dtls1_shutdown(SSL *s)
{
int ret;
#ifndef OPENSSL_NO_SCTP
- if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
+ BIO *wbio;
+
+ wbio = SSL_get_wbio(s);
+ if (wbio != NULL && BIO_dgram_is_sctp(wbio) &&
!(s->shutdown & SSL_SENT_SHUTDOWN)) {
- ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
+ ret = BIO_dgram_sctp_wait_for_dry(wbio);
if (ret < 0)
return -1;