trezor/keepkey: silence UserCancelled during recovery

plugins/keepkey/keepkey.py

@@ -2,7 +2,7 @@ from binascii import hexlify, unhexlify
 import traceback
 import sys
 
-from electrum.util import bfh, bh2u
+from electrum.util import bfh, bh2u, UserCancelled
 from electrum.bitcoin import (b58_address_to_hash160, xpub_from_pubkey,
                               TYPE_ADDRESS, TYPE_SCRIPT,
                               is_segwit_address)
@@ -186,6 +186,8 @@ class KeepKeyPlugin(HW_PluginBase):
     def _initialize_device_safe(self, settings, method, device_id, wizard, handler):
         try:
             self._initialize_device(settings, method, device_id, wizard, handler)
+        except UserCancelled:
+            pass
         except BaseException as e:
             traceback.print_exc(file=sys.stderr)
             handler.show_error(str(e))