revert compatibility change in include/flatbuffers/flatbuffers.h vector_downward::release
revert compatibility change in include/flatbuffers/flatbuffers.h vector_downward::release

felixguendling/flatbuffers,felixguendling/flatbuffers,felixguendling/flatbuffers,felixguendling/flatbuffers,felixguendling/flatbuffers,felixguendling/flatbuffers