lavfi/testsrc: use int in place of unsigned
authorStefano Sabatini <stefasab@gmail.com>
Wed, 17 Apr 2013 19:21:10 +0000 (21:21 +0200)
committerStefano Sabatini <stefasab@gmail.com>
Wed, 17 Apr 2013 20:39:34 +0000 (22:39 +0200)
commit7ab631261033a71a52563c3b23b6eef826eb5994
treedc6a75a65c9fb1405860b5c04affbaabb4818c56
parent5229b78371643d33fc6a36f86f6342a85d304981
lavfi/testsrc: use int in place of unsigned

Avoid implicit int->unsigned conversion, causing invalid access in case
of negative linesize.

Fix crash with:
ffplay -f lavfi testsrc,vflip
libavfilter/vsrc_testsrc.c