commit 43e7d3bc150788045b549f4ab94a91095980d059
author noahric <noahric@chromium.org> Tue Jul 14 17:45:02 2015
committer Commit bot <commit-bot@chromium.org> Tue Jul 14 17:45:07 2015
tree 4496c8c29d8c5ec96b1d9ac53f4702f19963cd55
parent ba8c15b857c0f341d9c1e02d41b6ccd56f9f1030

Avoid overflow in checking for emulation bytes in rbsp.

Also fixed an arithmetic issue where a 0 0 3 at the end of the rbsp would include the 3 (that's not a legal bitstream anyway, so it probably wasn't a real bug, but it was incorrect).

This maintains the underflow fix from an earlier CL (https://codereview.webrtc.org/1219493004/). The overflow fix is virtually impossible to hit (hence no unit tests), but is there for strict correctness.

BUG=

Review URL: https://codereview.webrtc.org/1226203002

Cr-Commit-Position: refs/heads/master@{#9581}