As with Group type is FAILOVER,watchPort&watchGroup does not set correctly When builds the Group Modification Openflow message

As with Group type is FAILOVER,watchPort&watchGroup does not set correctly When builds the Group Modification Openflow message.
The function buildGroupMod does not handle this case as same as buildGroupAdd,the following code should add:

if (type == GroupDescription.Type.FAILOVER && bucket.watchPort() != null)

{ bucketBuilder.setWatchPort(OFPort.of((int) bucket.watchPort().toLong())); }

else

{ bucketBuilder.setWatchPort(OFPort.ANY); }

if (type == GroupDescription.Type.FAILOVER && bucket.watchGroup() != null)

{ bucketBuilder.setWatchGroup(OFGroup.of(bucket.watchGroup().id())); }

else

{ bucketBuilder.setWatchGroup(OFGroup.ANY); }