adapter: Clear timeout handle when check presence timer stopped

__near_adapter_stop_check_presence() stops the neard check presence
timer but doesn't clear the timer handle.  This can cause neard to
try to stop the timer when it isn't running.  To fix that, clear the
handle so neard doesn't try to stop an already stopped timer.

Signed-off-by: Mark Greer <mgreer@animalcreek.com>
1 file changed