From 8ab53ac1641826f35868ebacda00377fa5a729e9 Mon Sep 17 00:00:00 2001
From: Paul-Emmanuel Raoul <skyper@skyplabs.net>
Date: Sun, 21 Apr 2024 19:22:27 +0200
Subject: [PATCH] Replace calls to 'Py_INCREF' with 'Py_XINCREF'

The 'PyErr_NewException' function can return 'NULL', which means that
'Py_XINCREF' must be used instead of 'Py_INCREF'.

See https://docs.python.org/3/extending/extending.html#null-pointers for
further information.
---
 src/python4yahdlc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/python4yahdlc.c b/src/python4yahdlc.c
index acb494b..56f1327 100644
--- a/src/python4yahdlc.c
+++ b/src/python4yahdlc.c
@@ -162,7 +162,7 @@ PyMODINIT_FUNC PyInit_yahdlc(void)
         return NULL;
 
     Yahdlc_MessageError = PyErr_NewException("yahdlc.MessageError", NULL, NULL);
-    Py_INCREF(Yahdlc_MessageError);
+    Py_XINCREF(Yahdlc_MessageError);
     if (PyModule_AddObject(m, "MessageError", Yahdlc_MessageError) < 0) {
       Py_XDECREF(Yahdlc_MessageError);
       Py_CLEAR(Yahdlc_MessageError);
@@ -171,7 +171,7 @@ PyMODINIT_FUNC PyInit_yahdlc(void)
     }
 
     Yahdlc_FCSError = PyErr_NewException("yahdlc.FCSError", NULL, NULL);
-    Py_INCREF(Yahdlc_FCSError);
+    Py_XINCREF(Yahdlc_FCSError);
     if (PyModule_AddObject(m, "FCSError", Yahdlc_FCSError) < 0) {
       Py_XDECREF(Yahdlc_FCSError);
       Py_CLEAR(Yahdlc_FCSError);