aada31c041
Fix an issue where imported F-Curves were allocated but not zeroed out,
when importing skeletal animation from USD.
When growing the F-Curve array, `BKE_fcurve_bezt_resize()` will now zero
out new array elements, instead of leaving the initialisation to the
caller. There are many fields in `BezTriple`, and the caller is likely
to only set those that can be imported (like the keyframe coordinates &
handles).
This fixes an issue introduced in 857743db9d.
Pull Request: https://projects.blender.org/blender/blender/pulls/135448