Fix test_ext_entity_latin1_utf16be_bom2() to work in UTF-16 builds
Fix test_ext_entity_latin1_utf16be_bom2() to work in UTF-16 builds

libexpat/libexpat,libexpat/libexpat,libexpat/libexpat,libexpat/libexpat,libexpat/libexpat,libexpat/libexpat