[third_party/ffmpeg] Reenable UBSAN

I am no longer able to reproduce the described failure locally.

Tested:
  fx --dir out/core.x64 set core.x64 \
    --variant asan-ubsan \
    --with=bundles/buildbot/core --args=use_prebuilt_ffmpeg=false
  fx test -o use_h264_decoder_test_comp.cm

Since we never build ffmpeg from source in CQ, the only way to test this
is in CI.

Fixed: 46940
Change-Id: I877d37b07129fd8dfbb01441022acb246a290f96
Reviewed-on: https://fuchsia-review.googlesource.com/c/third_party/ffmpeg/+/811951
Reviewed-by: Petr Hosek <phosek@google.com>
1 file changed