Distortion occurred when angle mod 90° != 0

All of my past & future contributions to LibreOffice may be
   licensed under the MPL/LGPLv3+ dual license
- Lennard Wasserthal

Change-Id: I4af7e7f1dcbc4d1262592c362532df4957e52399
Signed-off-by: Lennard <Wasserthal@nefkom.net>
Reviewed-on: https://gerrit.libreoffice.org/679Reviewed-by: Radek Doulík <rodo@novell.com>
Tested-by: Radek Doulík <rodo@novell.com>