gnutls_packet_get: avoid null pointer dereference on NULL input

That is, still allow the function to handle a NULL packet
input but reset the data contents.

diff --git a/lib/record.c b/lib/record.c
index b07769f495203ec6d21e84ae088a12309f6b4f34..ca181622c1e7542febf1fd71e6484595079359b1 100644 (file)
--- a/lib/record.c
+++ b/lib/record.c
@@ -1450,6 +1450,7 @@ void gnutls_packet_get(gnutls_packet_t packet, gnutls_datum_t *data, unsigned ch
                if (data) {
                        data->data = NULL;
                        data->size = 0;
+                       return;
                }
        }