Storing metadata rd_kafka_offsets_store with and rd_kafka_commit with NULL

[mensfeld]

I use rd_kafka_offsets_store with metadata that is suppose to be stored based on #4084

Then I invoke rd_kafka_commit with no tpl (NULL) and I would expect the metadata to be stored alongside the offsets but it is empty. Only passing explicit tpl to rd_kafka_commit stores the metadata. Isn't it against the 4084?

[mensfeld]

It does. I misread docs and made a bug in the bindings.