waveform is no longer displayed

[leclerc]

Hello, since the last update, the waveform is no longer displayed! The histogram remains functional.

I'm on archlinux, with manual compilation of Art

‌

with the version of the AUR depots here is what is displayed:

Thank you

[agriggio]

histogram: properly copy waveform data

Fixes #161

→ <<cset d5832685aac4>>

[leclerc]

Thank you Alberto