Fix crashing print_control_identifiers() for PasswordBox on Py2.
Fix crashing print_control_identifiers() for PasswordBox on Py2.

cetygamer/pywinauto,airelil/pywinauto,vasily-v-ryabov/pywinauto,drinkertea/pywinauto,pywinauto/pywinauto,MagazinnikIvan/pywinauto