qt wizard decrypt wallet with hww: just pass through cancellation

E | gui.qt.installwizard.InstallWizard |
Traceback (most recent call last):
  File "...\electrum\electrum\base_wizard.py", line 541, in create_wallet
    password = k.get_password_for_storage_encryption()
  File "...\electrum\electrum\keystore.py", line 768, in get_password_for_storage_encryption
    client = self.plugin.get_client(self)
  File "...\electrum\electrum\plugins\trezor\trezor.py", line 180, in get_client
    client = devmgr.client_for_keystore(self, handler, keystore, force_pair)
  File "...\electrum\electrum\plugin.py", line 465, in client_for_keystore
    info = self.select_device(plugin, handler, keystore, devices)
  File "...\electrum\electrum\plugin.py", line 585, in select_device
    raise UserCancelled()
electrum.util.UserCancelled

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "...\electrum\electrum\gui\qt\installwizard.py", line 300, in select_storage
    self.run('choose_hw_device', HWD_SETUP_DECRYPT_WALLET, storage=temp_storage)
  File "...\electrum\electrum\base_wizard.py", line 109, in run
    f(*args, **kwargs)
  File "...\electrum\electrum\base_wizard.py", line 332, in choose_hw_device
    self.choice_dialog(title=title, message=msg, choices=choices,
  File "...\electrum\electrum\gui\qt\installwizard.py", line 99, in func_wrapper
    out = func(*args, **kwargs)
  File "...\electrum\electrum\gui\qt\installwizard.py", line 536, in choice_dialog
    self.exec_layout(vbox, title)
  File "...\electrum\electrum\gui\qt\installwizard.py", line 392, in exec_layout
    raise UserCancelled
electrum.util.UserCancelled

electrum/gui/qt/installwizard.py

@@ -304,6 +304,8 @@ class InstallWizard(QDialog, MessageBoxMixin, BaseWizard):
                                               _('If you use a passphrase, make sure it is correct.'))
                         self.reset_stack()
                         return self.select_storage(path, get_wallet_from_daemon)
+                    except UserCancelled:
+                        raise
                     except BaseException as e:
                         self.logger.exception('')
                         self.show_message(title=_('Error'), msg=repr(e))