Resolves: #i119480# Fixed import of curves from PPT

Reported by: Du Jing
Patch by: SunYing
Review by: Andre Fischer

(cherry picked from commit 7d4fbffcf83ae6cbd01485320c2f21155c3dd4de)

Change-Id: I1ca3caf3aaec255ab204a4a687ed8434fbdb234a