Scrollable DataTable fails with percentage height and header

[cagataycivici]

If a scrollable datatable does not define a header but uses percentage scroll height, a javascript error is thrown.

:64580/app/services/exception.service.js:38 TypeError: Cannot read property 'offsetHeight' of null
at DomHandler.getOuterHeight (http://localhost:64580/scripts/lib/primeng/components/dom/domhandler.js:219:24)
at DataTable.refreshScrolling (http://localhost:64580/scripts/lib/primeng/components/datatable/datatable.js:870:52)
at DataTable.ngAfterViewChecked (http://localhost:64580/scripts/lib/primeng/components/datatable/datatable.js:203:22)