[OLINGO-418] add fix when using the lasted rxjs library for testing, detail: add call to observable.dispose()
[OLINGO-418] add fix when using the lasted rxjs library for testing, detail: add call to observable.dispose()

hakandilek/olingo-odata4-js,hakandilek/olingo-odata4-js,hakandilek/olingo-odata4-js