don't forget glewInit

Change-Id: Ifc1c995f50fe34dbb072345aab37190d3a57e074
Reviewed-on: https://gerrit.libreoffice.org/10094
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>
Tested-by: Tomaž Vajngerl <quikee@gmail.com>
(cherry picked from commit b1d4fbb69491bcf211fb4c8cb5c2dd4d9efb4edb)
Reviewed-on: https://gerrit.libreoffice.org/10185
Reviewed-by: Michael Meeks <michael.meeks@collabora.com>
Reviewed-by: Zolnai Tamás <zolnaitamas2000@gmail.com>
Tested-by: Zolnai Tamás <zolnaitamas2000@gmail.com>