Structure device not freed in error case

In case of an error in the call usb_device_get_fd()
the memory created by usb_open_device() is never
freed.

Added a call to usb_device_close in case of error to
release the allocated memory.

Change-Id: Iaa83674f000242d80604dd30c782236f7afd90c2
Tethering: Skip link local addresses when enabling NAT

Only one entry is allowed to be added to route table 60 for all
interface ipv6 link local addresses, so skip ipv6 link local
addresses on all interfaces when enabling NAT

Change-Id: Ibbe6c2bdae83586cdd38287089715f3433bbb91f
Signed-off-by: jiaguo <jiaguo@marvell.com>
Fix, MountService now only sends one onShutDownComplete

The event onShutDownComplete are sent only when all
volumes are shutdown. (Not one for every volume.)

Change-Id: I6af521ee8285ca581efac7d3c5f013dfbff3ee30
Merge "Fix, MountService now only sends one onShutDownComplete"
Merge "Tethering: Skip link local addresses when enabling NAT"
Merge "Structure device not freed in error case"
Merge branch 'master' of https://android.googlesource.com/platform/frameworks/base into HEAD