fix compilation

src/vs/platform/download/node/downloadIpc.ts

@@ -9,7 +9,7 @@ import URI from 'vs/base/common/uri';
 import * as path from 'path';
 import * as fs from 'fs';
 import { TPromise } from 'vs/base/common/winjs.base';
-import { IChannel } from 'vs/base/parts/ipc/common/ipc';
+import { IChannel } from 'vs/base/parts/ipc/node/ipc';
 import { Event, Emitter, buffer } from 'vs/base/common/event';
 import { IDownloadService } from 'vs/platform/download/common/download';
 import { mkdirp } from 'vs/base/node/pfs';