python/param: Cope with lp configfile being NULL.

diff --git a/source4/param/pyparam.c b/source4/param/pyparam.c
index 2d5a584fb2709656573de95464e83b022ecd959d..0061eadc54e0c98f85aa1122de87accad499fe6a 100644 (file)
--- a/source4/param/pyparam.c
+++ b/source4/param/pyparam.c
@@ -263,7 +263,11 @@ static PyObject *py_lp_ctx_default_service(py_talloc_Object *self, void *closure
 
 static PyObject *py_lp_ctx_config_file(py_talloc_Object *self, void *closure)
 {
-       return PyString_FromString(lp_configfile(self->ptr));
+       const char *configfile = lp_configfile(self->ptr);
+       if (configfile == NULL)
+               Py_RETURN_NONE;
+       else
+               return PyString_FromString(configfile);
 }
 
 static PyGetSetDef py_lp_ctx_getset[] = {