proresenc_kostya: remove unneeded parameters

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit bf10f09bccdcfdb41b9f5bbae01d55961bfd0693)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
proresenc_kostya: report buffer overflow

If the allocated size, despite best efforts, is too small, exit
with the appropriate error.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 52b81ff4635c077b2bc8b8d3637d933b6629d803)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>