[libvirt-python v3 PATCH] Improve error output when use getTime with a nonzero flags.

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When give a nonzero flags to getTime, c_retval will get -1 and goto cleanup.
But py_retval still is NULL,so set py_retval =  VIR_PY_NONE.
This will make the output message more correct.

error will disappear:
SystemError: error return without exception set

v2:
https://www.redhat.com/archives/libvir-list/2014-October/msg00497.html

Signed-off-by: Luyao Huang <lhuang@xxxxxxxxxx>
---
 libvirt-override.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libvirt-override.c b/libvirt-override.c
index 9ba87eb..8690f4f 100644
--- a/libvirt-override.c
+++ b/libvirt-override.c
@@ -7757,9 +7757,11 @@ libvirt_virDomainGetTime(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) {
     c_retval = virDomainGetTime(domain, &seconds, &nseconds, flags);
     LIBVIRT_END_ALLOW_THREADS;
 
-    if (c_retval < 0)
+    if (c_retval < 0) {
+	py_retval = VIR_PY_NONE;
         goto cleanup;
-
+    }
+   
     if (!(pyobj_seconds = libvirt_longlongWrap(seconds)) ||
         PyDict_SetItemString(dict, "seconds", pyobj_seconds) < 0)
         goto cleanup;
-- 
1.8.3.1

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