[Fixed]CurvySpline.Length can return 0 during init stage

[c0ffee]

Hello,
Calling CurvySpline.Refresh before CurvySpline.Length fixed it. Thanks.

Here is more info in case still needed.
The spline was inside prefab referenced by scene pool, during one function:
- instance got created by pool, taken from it
- CurvySpline.Length was used to put objects evenly along the spline