By Xlsx files, rChartSize is using the Values that it gets from getChartSize(), this is the
same Size as rPageSize. By Docx files rChartSize was a negative number everytime,
so the calcAbsRectangle Method gave back a 'false' Value because of this. The rPageSize shows
at every Debugging, Width = 16000, and Height = 9000 for Docx files, and beacause rChartSize was
equal to rPageSize by Xlsx, I tried rChartSize with this Fixed Size.

Change-Id: Ia29fa3401475c33c1b5e3dde9c3cb030a02cceb4
Reviewed-on: https://gerrit.libreoffice.org/62991Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>
Tested-by: Bartosz Kosiorek <gang65@poczta.onet.pl>