nl80211: Fix a memory leak on deinit with HT enabled mesh

nl80211: Fix a memory leak on deinit with HT enabled mesh

Commit a70cd0db876b2ffad7e3d608e3f9a2fcf2e7a879 ('nl80211: Don't
register for Beacon frames for IEEE 802.11ad AP') could cause a trailing
memory leak on IEEE 802.11n enabled mesh. This commit fixes the issue.

-----------------
ELOOP: remaining socket: sock=12 eloop_data=0xba8260 user_data=0xbb3d90 handler=0x4aeb90
WPA_TRACE: eloop unregistered socket handler: 0x4aeb90
     nl80211_recv_beacons() ../src/drivers/driver_nl80211.c:625
WPA_TRACE: eloop sock - START
[0]: ./hostap/wpa_supplicant/wpa_supplicant() [0x431f2a]
     eloop_sock_table_add_sock() ../src/utils/eloop.c:360
[1]: ./hostap/wpa_supplicant/wpa_supplicant() [0x4b0e49]
     nl80211_register_eloop_read() ../src/drivers/driver_nl80211.c:153
[2]: ./hostap/wpa_supplicant/wpa_supplicant() [0x4bacf0]
     dl_list_add() src/utils/list.h:30
     nl80211_get_wiphy_data_ap() ../src/drivers/driver_nl80211.c:728
     wpa_driver_nl80211_set_ap() ../src/drivers/driver_nl80211.c:3786
[3]: ./hostap/wpa_supplicant/wpa_supplicant(ieee802_11_set_beacon+0x150) [0x469700]
     ieee802_11_set_beacon() ../src/ap/beacon.c:1349
[4]: ./hostap/wpa_supplicant/wpa_supplicant(ieee802_11_set_beacons+0x45) [0x469805]
     ieee802_11_set_beacons() ../src/ap/beacon.c:1368
[5]: ./hostap/wpa_supplicant/wpa_supplicant() [0x437559]
     mesh_mpm_add_peer() mesh_mpm.c:688
[6]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_mesh_new_mesh_peer+0x42) [0x439182]
     wpa_mesh_new_mesh_peer() mesh_mpm.c:737
[7]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_mesh_notify_peer+0x80) [0x436460]
     wpa_mesh_notify_peer() mesh.c:347
[8]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_supplicant_event+0xc7a) [0x4a69ba]
     wpa_supplicant_event() events.c:4312
[9]: ./hostap/wpa_supplicant/wpa_supplicant(process_global_event+0xaf0) [0x4c2d40]
     nl80211_new_peer_candidate() ../src/drivers/driver_nl80211_event.c:1247
     do_process_drv_event() ../src/drivers/driver_nl80211_event.c:2322
     process_global_event() ../src/drivers/driver_nl80211_event.c:2360
[10]: /lib/x86_64-linux-gnu/libnl-3.so.200(nl_recvmsgs_report+0x3dc) [0x7f937176873c]
[11]: /lib/x86_64-linux-gnu/libnl-3.so.200(nl_recvmsgs+0x9) [0x7f9371768ba9]
[12]: ./hostap/wpa_supplicant/wpa_supplicant() [0x4aeb58]
     wpa_driver_nl80211_event_receive() ../src/drivers/driver_nl80211.c:1457
[13]: ./hostap/wpa_supplicant/wpa_supplicant() [0x43242e]
     eloop_sock_table_dispatch() ../src/utils/eloop.c:598
[14]: ./hostap/wpa_supplicant/wpa_supplicant(eloop_run+0x22e) [0x432e0e]
     eloop_sock_table_dispatch() ../src/utils/eloop.c:589
     eloop_run() ../src/utils/eloop.c:1219
[15]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_supplicant_run+0x77) [0x49e327]
     wpa_supplicant_run() wpa_supplicant.c:5608
WPA_TRACE: eloop sock - END
MEMLEAK[0xba81b0]: len 72
WPA_TRACE: memleak - START
[0]: ./hostap/wpa_supplicant/wpa_supplicant(os_malloc+0x57) [0x430d67]
     os_malloc() ../src/utils/os_unix.c:690
[1]: ./hostap/wpa_supplicant/wpa_supplicant(os_zalloc+0xe) [0x430fce]
     os_zalloc() ../src/utils/os_unix.c:749
[2]: ./hostap/wpa_supplicant/wpa_supplicant() [0x4babaa]
     nl80211_get_wiphy_data_ap() ../src/drivers/driver_nl80211.c:692
     wpa_driver_nl80211_set_ap() ../src/drivers/driver_nl80211.c:3786
[3]: ./hostap/wpa_supplicant/wpa_supplicant(ieee802_11_set_beacon+0x150) [0x469700]
     ieee802_11_set_beacon() ../src/ap/beacon.c:1349
[4]: ./hostap/wpa_supplicant/wpa_supplicant(ieee802_11_set_beacons+0x45) [0x469805]
     ieee802_11_set_beacons() ../src/ap/beacon.c:1368
[5]: ./hostap/wpa_supplicant/wpa_supplicant() [0x437559]
     mesh_mpm_add_peer() mesh_mpm.c:688
[6]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_mesh_new_mesh_peer+0x42) [0x439182]
     wpa_mesh_new_mesh_peer() mesh_mpm.c:737
[7]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_mesh_notify_peer+0x80) [0x436460]
     wpa_mesh_notify_peer() mesh.c:347
[8]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_supplicant_event+0xc7a) [0x4a69ba]
     wpa_supplicant_event() events.c:4312
[9]: ./hostap/wpa_supplicant/wpa_supplicant(process_global_event+0xaf0) [0x4c2d40]
     nl80211_new_peer_candidate() ../src/drivers/driver_nl80211_event.c:1247
     do_process_drv_event() ../src/drivers/driver_nl80211_event.c:2322
     process_global_event() ../src/drivers/driver_nl80211_event.c:2360
[10]: /lib/x86_64-linux-gnu/libnl-3.so.200(nl_recvmsgs_report+0x3dc) [0x7f937176873c]
[11]: /lib/x86_64-linux-gnu/libnl-3.so.200(nl_recvmsgs+0x9) [0x7f9371768ba9]
[12]: ./hostap/wpa_supplicant/wpa_supplicant() [0x4aeb58]
     wpa_driver_nl80211_event_receive() ../src/drivers/driver_nl80211.c:1457
[13]: ./hostap/wpa_supplicant/wpa_supplicant() [0x43242e]
     eloop_sock_table_dispatch() ../src/utils/eloop.c:598
[14]: ./hostap/wpa_supplicant/wpa_supplicant(eloop_run+0x22e) [0x432e0e]
     eloop_sock_table_dispatch() ../src/utils/eloop.c:589
     eloop_run() ../src/utils/eloop.c:1219
[15]: ./hostap/wpa_supplicant/wpa_supplicant(wpa_supplicant_run+0x77) [0x49e327]
     wpa_supplicant_run() wpa_supplicant.c:5608
WPA_TRACE: memleak - END
MEMLEAK: total 72 bytes
-----------------

Signed-off-by: Masashi Honma <masashi.honma@gmail.com>