qml: fix 46b25317a9

electrum/gui/qml/qenetwork.py

@@ -55,10 +55,13 @@ class QENetwork(QObject, QtEventListener):
         self._height = network.get_local_height()  # init here, update event can take a while
         self._server_height = network.get_server_height()  # init here, update event can take a while
         self.register_callbacks()
-        self.destroyed.connect(self.unregister_callbacks)
+        self.destroyed.connect(lambda: self.on_destroy())
 
         self._qeconfig.useGossipChanged.connect(self.on_gossip_setting_changed)
 
+    def on_destroy(self):
+        self.self.unregister_callbacks()
+
     @event_listener
     def on_event_network_updated(self, *args):
         self.networkUpdated.emit()

electrum/gui/qml/qeswaphelper.py

@@ -54,13 +54,16 @@ class QESwapHelper(AuthMixin, QObject, QtEventListener):
         self._rightVoid = 0
 
         self.register_callbacks()
-        self.destroyed.connect(self.unregister_callbacks)
+        self.destroyed.connect(lambda: self.on_destroy())
 
         self._fwd_swap_updatetx_timer = QTimer(self)
         self._fwd_swap_updatetx_timer.setSingleShot(True)
         # self._fwd_swap_updatetx_timer.setInterval(500)
         self._fwd_swap_updatetx_timer.timeout.connect(self.fwd_swap_updatetx)
 
+    def on_destroy(self):
+        self.unregister_callbacks()
+
     walletChanged = pyqtSignal()
     @pyqtProperty(QEWallet, notify=walletChanged)
     def wallet(self):