moduleName can be NULL

diff --git a/Python/errors.c b/Python/errors.c
index 275a0656f6b8583c211eeaafe6c2765296a706b7..8327f5395d3ab8683497b37c244230f3152e9454 100644 (file)
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -604,7 +604,7 @@ PyErr_WriteUnraisable(PyObject *obj)
                                PyFile_WriteString(": ", f);
                                PyFile_WriteObject(v, f, 0);
                        }
-                       Py_DECREF(moduleName);
+                       Py_XDECREF(moduleName);
                }
                PyFile_WriteString(" in ", f);
                PyFile_WriteObject(obj, f, 0);