Diffusion Krita d5bb12ac894a

Fix build with Qt 5.15

Authored by heikobecker on Mar 23 2020, 8:53 PM.

Description

Fix build with Qt 5.15

QPainterPath is no longer included via qtransform.h (since
5.15.0-beta2, 50d2acdc93b4de2ba56eb67787e2bdcb21dd4bea in qtbase.git).