Fix fairly harmless OOB read from MAV_0001.3G2.asan.4f.188

README.chromium

Index: README.chromium
===================================================================
--- README.chromium	(revision 120156)
+++ README.chromium	(working copy)
@@ -70,6 +70,7 @@
        patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/50_vp8_fix_frame_size_changes.patch
        patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/52_vorbis_fix_floor1_vector_int_overflow.patch
        patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/53_matroska_codec_config.patch
+       patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/54_mov_stss.patch
        cd ..
 
 
@@ -360,6 +361,14 @@
        diff -wurp -N orig ffmpeg
        diff -wurp -N orig ffmpeg >patches/to_upstream/53_matroska_codec_config.patch
 
+       rm -rf orig
+       cp -R ffmpeg orig
+       cd ffmpeg
+       patch -p1 --no-backup-if-mismatch < ../patches/to_upstream/54_mov_stss.patch
+       cd ..
+       diff -wurp -N orig ffmpeg
+       diff -wurp -N orig ffmpeg >patches/to_upstream/54_mov_stss.patch
+
 Testing
   Updates should be tested against
   a) http://wiki.xiph.org/TheoraTestsuite