core: fix FrameEval's createVideoFilter call
core: fix FrameEval's createVideoFilter call

Passing numpropsrc as numDeps is unsafe as it might be -1.

This should make the non-Windows CI green again.

Signed-off-by: akarin <042dc4512fa3d391c5170cf3aa61e6a638f84342@akarin.info>

vapoursynth/vapoursynth,vapoursynth/vapoursynth,vapoursynth/vapoursynth,vapoursynth/vapoursynth