avcodec: add emuedge_linesize_type

Currently all uses of the emu edge code as well as the code itself
assume int linesize
changing some but not changing all would introduce a security issue
once all use this typedef a simple search and replace can be
done to switch them all to ptrdiff_t

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 2ffead98ddd384f61cdf6b1cb3f36592f54cd34a)

Conflicts:

	libavcodec/mpegvideo_common.h
	libavcodec/videodsp.h
	libavcodec/videodsp_template.c
	libavcodec/x86/videodsp_init.c

0 files changed, 0 insertions, 0 deletions