fix #1965 / win / users() / critical: Py_INCREF(Py_None) before setting None object in C

Signed-off-by: Giampaolo Rodola <g.rodola@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/psutil/_psutil_windows.c b/psutil/_psutil_windows.c
index 13cf58c4..8abd8a8d 100644
--- a/psutil/_psutil_windows.c
+++ b/psutil/_psutil_windows.c
@@ -1252,6 +1252,7 @@ psutil_users(PyObject *self, PyObject *args) {
                 goto error;
         }
         else {
+            Py_INCREF(Py_None);
             py_address = Py_None;
         }