Issue Id: b646dc98-d0b5-dcc1-1481-205f3c1c7c0e

Versions
- 1.24.0
- b4e6fe3
- f67e639
Stack
TypeError: Cannot read property 'reveal' of null
/vs/base/parts/tree/browser/treeImpl.ts#204:20 (reveal)
/vs/workbench/parts/outline/electron-browser/outlinePanel.ts#506:20
/vs/base/common/winjs.base.js#10:0
/vs/base/common/winjs.base.js#10:0
/vs/base/common/winjs.base.js#10:0 (init)
/vs/base/common/winjs.base.js#1656:0
/vs/base/common/winjs.base.js#10:0 (selection)
/vs/workbench/parts/outline/electron-browser/outlinePanel.ts#497:59 (_revealEditorSelection)
/vs/workbench/parts/outline/electron-browser/outlinePanel.ts#487:119 (call)
/vs/base/common/event.ts#140:15 (fire)
/vs/editor/browser/widget/codeEditorWidget.ts#1319:37 (call)
/vs/base/common/event.ts#140:15 (fire)
/vs/editor/common/controller/cursor.ts#410:21 (_emitStateChangedIfNecessary)
/vs/editor/common/controller/cursor.ts#207:7
/vs/base/common/winjs.base.js#291:0