Delete question if download as cancelled

qutebrowser/app.py

@@ -19,7 +19,6 @@
 
 import os
 import sys
-import types
 import faulthandler
 import configparser
 from bdb import BdbQuit

qutebrowser/browser/downloads.py

@@ -372,6 +372,7 @@ class DownloadManager(QObject):
         q.cancelled.connect(q.deleteLater)
         self.questions.append(q)
         download.cancelled.connect(q.abort)
+        download.cancelled.connect(q.deleteLater)
         message.instance().question.emit(q, False)
 
     @pyqtSlot(DownloadItem)

qutebrowser/utils/debug.py

@@ -18,6 +18,7 @@
 """Utilities used for debugging."""
 
 import sys
+import types
 from functools import wraps
 
 from PyQt5.QtCore import (pyqtRemoveInputHook, QEvent, QCoreApplication,