asf: prevent packet_size_left from going negative if hdrlen > pktlen.
authorRonald S. Bultje <rsbultje@gmail.com>
Fri, 17 Feb 2012 20:21:18 +0000 (12:21 -0800)
committerRonald S. Bultje <rsbultje@gmail.com>
Sat, 18 Feb 2012 17:12:32 +0000 (09:12 -0800)
commit41afac7f7a67c634c86b1d17fc930e9183d4aaa0
tree73cd4eb5eecbdcb87fb1eff0ef92cea7ee333ce2
parent74699ac8c8b562e9f8d26e21482b89585365774a
asf: prevent packet_size_left from going negative if hdrlen > pktlen.

This prevents failed assertions further down in the packet processing
where we require non-negative values for packet_size_left.

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