Fix NPE caused by occasional attempts to update the query before the active walker has even gotten started.
Fix NPE caused by occasional attempts to update the query before the active walker has even gotten started.
kyawzinsoe/scripted,sirspock/scripted_token,scripted-editor/scripted,kyawzinsoe/scripted,sirspock/scripted_token,scripted-editor/scripted,kyawzinsoe/scripted,scripted-editor/scripted