fix potential free-of-null

diff --git a/src/nat/gnunet-service-nat.c b/src/nat/gnunet-service-nat.c
index 7fa329b54ecf6d560c5b709bb69987a05c939807..6ef0dce5ea68d79b5a51cc9108815238a317f391 100644 (file)
--- a/src/nat/gnunet-service-nat.c
+++ b/src/nat/gnunet-service-nat.c
@@ -1968,7 +1968,7 @@ client_disconnect_cb (void *cls,
     ch->ext_dns = NULL;
   }
   GNUNET_free_non_null (ch->hole_external);
-  GNUNET_free (ch->section_name);
+  GNUNET_free_non_null (ch->section_name);
   GNUNET_free (ch);
 }