Check against python None type when filling in auth parameters

When deciding whether to provide an auth function callback
in openAuth(), credcb was checked against NULL, when it
really needs to be checked against Py_None

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>

diff --git a/python/libvirt-override.c b/python/libvirt-override.c
index 768144a009690fdbf9e60dd58b53c88f8f341fa3..bb1d881f1ea8392768bc2fb22dd914f873dceb51 100644 (file)
--- a/python/libvirt-override.c
+++ b/python/libvirt-override.c
@@ -1840,7 +1840,8 @@ libvirt_virConnectOpenAuth(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
             auth.credtype[i] = (int)PyLong_AsLong(val);
         }
     }
-    auth.cb = pycredcb ? virConnectCredCallbackWrapper : NULL;
+    if (pycredcb && pycredcb != Py_None)
+        auth.cb = virConnectCredCallbackWrapper;
     auth.cbdata = pyauth;
 
     LIBVIRT_BEGIN_ALLOW_THREADS;