VS ResampleHQ error with some resizers

[Elgohan2]

Describe the bug
When choosing some resizer in ResampleHQ on VapourSynth filter, an error message is shown and we can't encode with that resizer.

Expected behavior
Encoding with chosen resizer.

How to reproduce the issue

1. Open a source file
2. Choose "VS Filters"
3. On "Resize" filter, choose one of them: "Rect", "Blackman", "Blackmanminlobe", "Spline64", "Gauss" or "Sinc"
4. Error message appear at the bottom of the windows and we can't click on "Accept / Next" button

Provide information

The error message is:

Script Error

Python exception: cannot access local variable 'scaler' where it is not associated with a value

Traceback (most recent call last):
  File "src\\cython\\vapoursynth.pyx", line 3233, in vapoursynth._vpy_evaluate
  File "src\\cython\\vapoursynth.pyx", line 3234, in vapoursynth._vpy_evaluate
  File "E:\dir_temp\movie.vpy", line 13, in <module>
    clip = resamplehq.resample_hq(clip, 1280, 720, kernel='Sinc')
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\StaxRip-v2.39.1-x64\Apps\Plugins\VS\Scripts\resamplehq.py", line 152, in resample_hq
    clip = scaler(clip, **scaler_opts)
           ^^^^^^
UnboundLocalError: cannot access local variable 'scaler' where it is not associated with a value

Used StaxRip version: 2.39.1

[Dendraspis]

Thanks for the catch, I'll remove them.