Nobody else will handle our scheduler or WM_TIMER event, so
there is really no point to return any error value from the
handlers to some lower level function.

Change-Id: I33eac11076a30220cfa11cec8f352bd5c8b69209
Reviewed-on: https://gerrit.libreoffice.org/59588
Tested-by: Jenkins
Reviewed-by: Jan-Marek Glogowski <glogow@fbihome.de>