Errors seen in dbus-python-1.0.0

This is a summary of errors seen when compiling with an experimental static analysis tool

Raw build logs can be seen here

Reference leaks

Code paths in which the reference count of an object is left too high, leading to memory leaks

abstract.c dbus_py_variant_level_set ob_refcnt of '*vl_obj' is 1 too high

Returning (PyObject*)NULL without setting an exception

These messages are often false-positives: the analysis tool has no knowledge about internal API calls that can lead to an exception being set
abstract.c DBusPythonString_tp_new returning (PyObject*)NULL without setting an exception
abstract.c DBusPythonLong_tp_new returning (PyObject*)NULL without setting an exception