avcodec/hevc: remove unused variable

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avcodec/wavpack: initialize pointers to silence warning about them possibly being uninitialized

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/h263dec: shift data in state to make more bits available to probe

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/h263dec/h263_probe: Check PSC bit 9 and 13 in

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
avformat/h263dec/h263_probe: Check TR

Fixes missdetection of Misdetection_345.mp3
Fixes missdetection of Misdetection_421.mp3
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>