WiP: added auction_brandt as extension

- added an extension to handle auctions via libbrandt
  - /extensions/auction_brandt GET and POST handler defined
  - initial parsing of transcript.json implemented, yet WiP

- multiple cleanups and changes to extension handling

1 files changed, 5 insertions, 1 deletions

diff --git a/src/exchange-tools/taler-exchange-offline.c b/src/exchange-tools/taler-exchange-offline.c
index e7cb94b5..3d980c27 100644
--- a/src/exchange-tools/taler-exchange-offline.c
+++ b/src/exchange-tools/taler-exchange-offline.c
@@ -4255,13 +4255,17 @@ do_extensions_show (char *const *args)
 
   GNUNET_assert (NULL != exts);
   for (it = TALER_extensions_get_head ();
-       NULL != it;
+       NULL != it && NULL != it->extension;
        it = it->next)
+  {
+	  const struct TALER_Extension *extension = it->extension;
+
     GNUNET_assert (0 ==
                    json_object_set_new (exts,
                                         it->extension->name,
                                         it->extension->config_to_json (
                                           it->extension)));
+  }
   obj = GNUNET_JSON_PACK (
     GNUNET_JSON_pack_object_steal ("extensions",
                                    exts));