mgr/nfs/cluster: fix type error

Signed-off-by: Sage Weil <sage@newdream.net>

diff --git a/src/pybind/mgr/nfs/cluster.py b/src/pybind/mgr/nfs/cluster.py
index 232b590b44a214b66674a51ba87e846b07d0a91e..63f55dd6c9645b6b8d31e08957e47a8ec4b8d91a 100644 (file)
--- a/src/pybind/mgr/nfs/cluster.py
+++ b/src/pybind/mgr/nfs/cluster.py
@@ -161,7 +161,7 @@ class NFSCluster:
                     else:
                         c = self.mgr.get_hosts()
                         orchestrator.raise_if_exception(c)
-                        hosts = [h for h in c.result
+                        hosts = [h for h in c.result or []
                                  if h.hostname == cluster.hostname]
                         if hosts:
                             ip = resolve_ip(hosts[0].addr)