ui: Fixed escaping and interrupting

* Fixed crash when closing window with ESCAPE
* Fixed interrupt status message not showing when interrupting parsing

src/lib_gui/qt/window/QtMainWindow.cpp

@@ -483,7 +483,6 @@ void QtMainWindow::toggleView(View* view, bool fromMenu)
 
 void QtMainWindow::handleEscapeShortcut()
 {
-	m_windowStack.popWindow();
 	MessageInterruptTasks().dispatch();
 }
 

src/lib_gui/qt/window/QtWindow.cpp

@@ -260,6 +260,7 @@ void QtWindow::keyPressEvent(QKeyEvent *event)
 	if (m_cancelAble && event->key() == Qt::Key_Escape)
 	{
 		emit canceled();
+		return;
 	}
 
 	QWidget::keyPressEvent(event);