Merge pull request #9672 from accumulator/qt_swaps_handle_usercancelled

qt: handle UserCancelled when initializing swapmanager and requesting…

electrum/gui/qt/main_window.py

@@ -1228,6 +1228,8 @@ class ElectrumWindow(QMainWindow, MessageBoxMixin, Logger, QtEventListener):
                     return
             try:
                 self.run_coroutine_dialog(wait_until_initialized(), _('Please wait...'))
+            except UserCancelled:
+                return False
             except Exception as e:
                 self.show_error(str(e))
                 return False

electrum/gui/qt/send_tab.py

@@ -345,6 +345,8 @@ class SendTab(QWidget, MessageBoxMixin, Logger):
                 except SwapServerError as e:
                     self.show_error(str(e))
                     return
+                except UserCancelled:
+                    return
                 tx.replace_output_address(DummyAddress.SWAP, swap.lockup_address)
                 assert tx.get_dummy_output(DummyAddress.SWAP) is None
                 tx.swap_invoice = invoice