Incorrect error message in fillGradientAngular function

[nico-robert]

There is a mismatch between the validation check and the error message in the fillGradientAngular()

if paint.gradientHandlePositions.len != 3:
 raise newException(PixieError, "Angular gradient requires 2 handles")

The code validates that gradientHandlePositions.len must equal 3
But the error message states "requires 2 handles"