Gtk: Fix compiling with older versions of cairo. Fixes #145
Gtk: Fix compiling with older versions of cairo. Fixes #145

bbqchickenrobot/Eto-1,l8s/Eto,PowerOfCode/Eto,PowerOfCode/Eto,PowerOfCode/Eto,l8s/Eto,l8s/Eto,bbqchickenrobot/Eto-1,bbqchickenrobot/Eto-1