[PATCH] wolfssl: treat !data->in_data as a WANT_READ

[Juliusz Sosinowicz]

When !data->in_data then wpabuf_len(data->in_data) will result in a segfault as wpabuf_len does not have a NULL check inside

Signed-off-by: Juliusz Sosinowicz <juliusz at wolfssl.com>
---
 src/crypto/tls_wolfssl.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/crypto/tls_wolfssl.c b/src/crypto/tls_wolfssl.c
index c6a801a2e5..f9929a1205 100644
--- a/src/crypto/tls_wolfssl.c
+++ b/src/crypto/tls_wolfssl.c
@@ -167,6 +167,9 @@ static int wolfssl_receive_cb(WOLFSSL *ssl, char *buf, int sz, void *ctx)
 	if (!data)
 		return -1;
 
+	if (!data->in_data)
+		return -2; /* WANT_READ */
+
 	if (get > (wpabuf_len(data->in_data) - data->consumed))
 		get = wpabuf_len(data->in_data) - data->consumed;
 
-- 
2.43.0