threading: Fix copy_lpf_progress initialization
The copy_lpf_progress bitfield might not be fully cleared when size goes down.
Credit to Oss-Fuzz.
Fixes #400.
Edited by Victorien Le Couviour--Tuffet
The copy_lpf_progress bitfield might not be fully cleared when size goes down.
Credit to Oss-Fuzz.
Fixes #400.
VideoLAN code repository instance