gh-95041: Fail syslog.syslog in case inner call to syslog.openlog fails (GH-95264)

(cherry picked from commit b1f648e)

Co-authored-by: Noam Cohen <[email protected]>

Author: miss-islington

Modules/syslogmodule.c

@@ -191,8 +191,14 @@ syslog_syslog(PyObject * self, PyObject * args)
          */
         if ((openargs = PyTuple_New(0))) {
             PyObject *openlog_ret = syslog_openlog(self, openargs, NULL);
-            Py_XDECREF(openlog_ret);
             Py_DECREF(openargs);
+            if (openlog_ret == NULL) {
+                return NULL;
+            }
+            Py_DECREF(openlog_ret);
+        }
+        else {
+            return NULL;
         }
     }