after 359e2be93a
"starmath: check GetEditWindow()"
Change-Id: I6a93c00a3b67338e7f2816d1ef31ccf7afe8555e
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167865
Reviewed-by: Xisco Fauli <xiscofauli@libreoffice.org>
Tested-by: Jenkins
Formula Editor Code for LibreOffice Writer
Good overview from the original developer:
http://www.mail-archive.com/dev@sw.openoffice.org/msg00200.html