AVC: Check w/ hasattr in bound method __del__ for uiAutomatoHelper
AVC: Check w/ hasattr in bound method __del__ for uiAutomatoHelper

Avoid exception on fail to find attribute

dtmilano/AndroidViewClient,dtmilano/AndroidViewClient,mwasilew/AndroidViewClient,dtmilano/AndroidViewClient,mwasilew/AndroidViewClient,mwasilew/AndroidViewClient