Qt: add message argument to get_password

electrum/gui/qt/main_window.py

@@ -137,8 +137,9 @@ def protected(func):
     def request_password(self, *args, **kwargs):
         parent = self.top_level_window()
         password = None
+        msg = kwargs.get('message')
         while self.wallet.has_keystore_encryption():
-            password = self.password_dialog(parent=parent)
+            password = self.password_dialog(parent=parent, msg=msg)
             if password is None:
                 # User cancelled password input
                 return
@@ -2000,7 +2001,7 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger, QtEventListener):
             self.show_error(_("Wallet file not found: {}").format(basename))
 
     @protected
-    def get_password(self, password):
+    def get_password(self, password, message=None):
         # may be used by plugins to get password
         return password