Repr nullptr-check can never trigger

[EinarElen]

This minor bug was caught by clang's warnings.

Framework/src/Framework/ConfigurePython.cxx

Lines 49 to 55 in ca2ee0d

	std::string repr(PyObject* obj) {
	PyObject* py_repr = PyObject_Repr(obj);
	if (repr == nullptr) return "";
	std::string str = getPyString(py_repr);
	Py_XDECREF(py_repr);
	return str;
	}

We accidentally try to compare the repr function rather than the py_repr pointer, which ends up comparing with the address of the function which can never be null...