Bridge/0xyyyyyy channels did not hanguped after call hangup

==============================
Centos 6
Asterisk 11.5.1
app:Confbridge
file:app_confbridge.c

issue :
Bridge/0xb75254f channels did not hanguped after call hanguped .

note1:After call hangup ast_bridge_change_state :2 which means Hangup
note2:Patch also note working

steps:
1)Nornal user Join
2)Hangup the Call.

kick_conference_participant(struct conference_bridge *bridge, const char *channel)

myhost*CLI> confbridge kick 585261 SIP/500-00000000

//—After 1st call start and join conference bridge —//
myhost*CLI> core show channels
Channel Location State Application(Data)
Bridge/0xb75254f4-in s@default:1 Up (None)
SIP/500-00000000 s@confbrindge-room:60 Up MyConfbridge(585261,adminuser
ConfBridgeRecorder/c s@default:1 Up (None)
Bridge/0xb75254f4-ou s@default:1 Up (None)
4 active channels
1 active call
1 call processed

//—log----//
====Inside bridge_bridgedchannel ====[2014-06-25 14:59:51] NOTICE[24968][C-00000001]:

chan_bridge.c:82 bridge_bridgedchannel: ====Inside bridge_bridgedchannel ====�
– <Bridge/0xb75254f4-input> Playing ‘confbridge-leave.slin’ (language ‘en’)

inside handle_conf_user_leave : USER_OPT_WAITMARKED
� –
CONF_STATE_INACTIVE.c insidsec leave_waitmarked

inside conf_change_state

� –
Changing conference ‘585261’ state from INACTIVE to EMPTY
bridging.c:1227 ast_bridge_remove: ===remove bridge channel using func ast_bridge_change_state ===�

– inside ast_bridge_change_state : arg1cursteat:0 arg2newstate:2 � –
final ast_bridge_change_state :2 � –
– Stopped music on hold on SIP/500-00000000
– <SIP/500-00000000> Playing ‘conf-kicked.ulaw’ (language ‘en’)
//----------//

myhost*CLI> confbridge list
Conference Bridge Name Users Marked Locked?
================================ ====== ====== ========
585261 1 1 unlocked

//—log of After Call Hangup----//
myhostCLI> confbridge list
Conference Bridge Name Users Marked Locked?
================================ ====== ====== ========
myhost
CLI> core show channels
Channel Location State Application(Data)
Bridge/0xb75254f4-in s@default:1 Up (None)
Bridge/0xb75254f4-ou s@default:1 Up (None)
2 active channels
0 active calls
1 call processed