Don't crash on NULL lookup_name

1 files changed, 3 insertions, 1 deletions

diff --git a/src/gns/gnunet-gns.c b/src/gns/gnunet-gns.c
index 1f3ce8331..7951eb569 100644
--- a/src/gns/gnunet-gns.c
+++ b/src/gns/gnunet-gns.c
@@ -350,7 +350,9 @@ identity_master_cb (void *cls,
   }
   GNUNET_IDENTITY_ego_get_public_key (ego, &pkey);
   /* if the name is of the form 'label.gnu', never go to the DHT */
-  dot = strchr (lookup_name, '.');
+  dot = NULL;
+  if (NULL != lookup_name)
+    dot = strchr (lookup_name, '.');
   if ( (NULL != dot) &&
        (0 == strcasecmp (dot, ".gnu")) )
     only_cached = GNUNET_YES;