tls-gnutls.c: Pass gnutls pointer to `gnutls_credentials_set()`

`credentials` changed type in 2.5, now gnutls pointer, which is needed
for the mentioned function, is a member of new structure which is
`credentials` now, so pass `credential->creds` to the function,
otherwise it crashes.

Found out during running the test suite with gnutls enabled.

diff --git a/cups/tls-gnutls.c b/cups/tls-gnutls.c
index 49cd2ed96a6ba5bdd991f292a25f606646c54e66..ede3e3712103d72fd9e9e449fd274edc1b1b2267 100644 (file)
--- a/cups/tls-gnutls.c
+++ b/cups/tls-gnutls.c
@@ -1717,7 +1717,7 @@ _httpTLSStart(http_t *http)               // I - Connection to server
   }
 
   if (!status && credentials)
-    status = gnutls_credentials_set(http->tls, GNUTLS_CRD_CERTIFICATE, credentials);
+    status = gnutls_credentials_set(http->tls, GNUTLS_CRD_CERTIFICATE, credentials->creds);
 
   if (status)
   {