Fix possible dereference of a null pointer (deftuple variable)

PyDECREF cannot be used with NULL pointer. Variable 'deftuple' may be unintialized in case that variable 'isdefault' is false. I suggest to use PyXDECREF macro instead.

1 files changed, 1 insertions, 1 deletions

diff --git a/netifaces.c b/netifaces.c
index 0566a7b..8b82819 100644
--- a/netifaces.c
+++ b/netifaces.c
@@ -1673,7 +1673,7 @@ gateways (PyObject *self)
           Py_DECREF (pyifname);
 
           if (tuple && !add_to_family (result, pmsg->rt.rtm_family, tuple)) {
-            Py_DECREF (deftuple);
+            Py_XDECREF (deftuple);
             Py_DECREF (result);
             free (msgbuf);
             close (s);