swscale: fix underflows in firstline calculations for extreme resizes.
authorRonald S. Bultje <rsbultje@gmail.com>
Thu, 23 Feb 2012 00:47:14 +0000 (16:47 -0800)
committerRonald S. Bultje <rsbultje@gmail.com>
Thu, 23 Feb 2012 18:30:07 +0000 (10:30 -0800)
commit491865b57db5fbb3053c221fd6d94b0435cad105
tree3b088dce41163f35e1ee54e3bf4268731346de64
parent19a65b5be47944c607a9e979edb098924d95f2e4
swscale: fix underflows in firstline calculations for extreme resizes.

Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
libswscale/swscale.c