(gnutls_x509_crt_sign2): Check to see if ISSUER_KEY is NULL before

continuing, based on report from Sascha Ziemann
<sascha.ziemann@secunet.com>.

diff --git a/lib/x509/x509_write.c b/lib/x509/x509_write.c
index 3708160b56001f35abf1e143c39c5fbd399c4701..056f7c9c77e346f038feabe94c420c674658f9e8 100644 (file)
--- a/lib/x509/x509_write.c
+++ b/lib/x509/x509_write.c
@@ -463,7 +463,7 @@ gnutls_x509_crt_sign2 (gnutls_x509_crt_t crt, gnutls_x509_crt_t issuer,
 {
   int result;
 
-  if (crt == NULL || issuer == NULL)
+  if (crt == NULL || issuer == NULL || issuer_key == NULL)
     {
       gnutls_assert ();
       return GNUTLS_E_INVALID_REQUEST;