python: Initialize new_params in virDomainSetSchedulerParameters

The new_params variable must be initialized in case the
virDomainGetSchedulerParameters call fails and we hit the cleanup
section before actually allocating the new parameters.
Signed-off-by: NFederico Simoncelli <fsimonce@redhat.com>

python/libvirt-override.c

@@ -700,7 +700,7 @@ libvirt_virDomainSetSchedulerParameters(PyObject *self ATTRIBUTE_UNUSED,
     int i_retval;
     int nparams = 0;
     Py_ssize_t size = 0;
-    virTypedParameterPtr params, new_params;
+    virTypedParameterPtr params, new_params = NULL;
 
     if (!PyArg_ParseTuple(args, (char *)"OO:virDomainSetScedulerParameters",
                           &pyobj_domain, &info))