Fix: NodeTypes contains method in Spacetree was making reference to a canvas variable.
Fix: NodeTypes contains method in Spacetree was making reference to a
canvas variable.

printedheart/jit,philogb/jit,tim777z/jit,shzy2012/jit,pingjiang/jit,philogb/jit,mcanthony/jit,shelsonjava/jit,shzy2012/jit,tim777z/jit,shzy2012/jit,pingjiang/jit,mcanthony/jit,pingjiang/jit,tim777z/jit,mcanthony/jit,printedheart/jit,shelsonjava/jit,printedheart/jit,shelsonjava/jit