Merge remote-tracking branch 'woju/master'

qubesmanager/settings.py

@@ -762,9 +762,13 @@ class VMSettingsWindow(Ui_SettingsDialog, QDialog):
 
     def __remove_service__(self):
         item = self.services_list.currentItem()
+
+        if not item:
+            return
         if str(item.text()) == 'meminfo-writer':
             QMessageBox.information(None, "Service can not be removed", "Service meminfo-writer can not be removed from the list.")
-        else:
+            return
+
         row = self.services_list.currentRow()
         item = self.services_list.takeItem(row)
         del self.new_srv_dict[str(item.text())]