dts_header: initialize SUBSTREAM_LBR size to 0
It's a substream and can't work alone, so a size of 0 is legitimate.
Fixes #28773 (closed) (Use of uninitialised value)
It's a substream and can't work alone, so a size of 0 is legitimate.
Fixes #28773 (closed) (Use of uninitialised value)
VideoLAN code repository instance