ryu-manager: fix keyError

Exception can be be caused by importing the threading module before
monkey.patch_all().
This patch fixes the following keyError:

$ ryu-manager --version
ryu-manager 1.5
Exception KeyError: KeyError(30027824,) in <module 'threading' from
'/usr/lib/python2.7/threading.pyc'> ignored

Signed-off-by: OHMURA Kei <ohmura.kei@lab.ntt.co.jp>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>

1 files changed, 3 insertions, 3 deletions

diff --git a/bin/ryu-manager b/bin/ryu-manager
index 002cc590..d1bf1302 100755
--- a/bin/ryu-manager
+++ b/bin/ryu-manager
@@ -17,13 +17,13 @@
 # limitations under the License.
 
 import gevent
+from gevent import monkey
+monkey.patch_all()
+
 import gflags
 import logging
 import sys
 
-from gevent import monkey
-monkey.patch_all()
-
 from ryu import log
 log.early_init_log(logging.DEBUG)