https://docs.microsoft.com/en-us/windows/desktop/api/objidl/nf-objidl-irunnableobject-isrunning

has IRunnableObject::IsRunning as returning BOOL unlike ::Run which returns HRESULT

Change-Id: I992d8ba33502eff56b582e1cb9b73f6227c383b8
Reviewed-on: https://gerrit.libreoffice.org/62169
Tested-by: Jenkins
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>