Issue Id: 86dabd97-0450-eca2-47b3-438e79cebd80

Versions
- 1.8.1
Stack
TypeError: Cannot read property 'done' of undefined
/vs/workbench/parts/search/browser/searchViewlet.ts#L881:54 (done)
/vs/base/browser/builder.ts#L579:4 (fn)
/vs/base/browser/dom.ts#L196:3 (handler)