Fixes https://github.com/harfbuzz/harfbuzz/issues/2567 New API: +hb_blob_create_or_fail() +hb_blob_create_from_file_or_fail() Use these in util/ to distinguish empty file from not-found file. Only err on the latter.
Remove unnecessary includes. Fixes build with some known broken SDKs (Nintendo Switch?) https://en.cppreference.com/w/cpp/header Fixes https://github.com/harfbuzz/harfbuzz/pull/2881