The names of float format family are changed.
old new
dec -> f64
MSGPACK_OBJECT_DOUBLE -> MSGPACK_OBJECT_FLOAT
msgpack::type::DOUBLE -> msgpack::type::FLOAT
Client codes could have compile errors when it use dec, MSGPACK_OBJECT_DOUBLE or msgpack::type::DOUBLE.
The best way to fix such errors, update client code. If it can't, set MSGPACK_USE_LEGACY_NAME_AS_FLOAT macro.
Then both old names and new names are available.
When the original PR was applied, the resource leak had been fixed, but a dual free problem had been happened.
When msgpack_unpacker_next returns MSGPACK_UNPACK_CONTINUE, msgpack_unpacked::zone is not replaced. Then mespack_zone_free is called twice with the same object. msgpack_unpacked_destroy frees msgpack::zone when it is not NULL and set it to NULL.
Also, fixed memory leak (msgpack_sbuffer) on the test code.
