5b3398a673
`NLASTRIP_TYPE_TRANSITION` was being used incorrectly as a flag, having `NLASTRIP_TYPE_TRANSITION=1` and `NLASTRIP_TYPE_SOUND=3` in the enum `eNlaStrip_Type`, when evaluating `NLASTRIP_TYPE_SOUND & NLASTRIP_TYPE_TRANSITION` gives a invalid truish value. Also `strips` that can't be placed were freed, but no removed from the `strips list`, this will cause a error if the `strip` is at begin or end of the list. Pull Request: https://projects.blender.org/blender/blender/pulls/110605